From shashidhar85 at gmail.com  Fri Feb  1 08:19:04 2013
From: shashidhar85 at gmail.com (Shashidhar Paragonda)
Date: Fri, 1 Feb 2013 12:49:04 +0530
Subject: [BangPypers] [ OpenGL ] [ Python ] [ Library ] ?
In-Reply-To: <510A373D.4050200@jtoomim.org>
References: <CAL2NvRzEae6O7XtGSUM=Hmc9Qm_vRne8uVhFQyUBmhpUV+Ht6g@mail.gmail.com>
	<510A373D.4050200@jtoomim.org>
Message-ID: <CAL2NvRzsewkHTZCCC_CdJkUTsGy=tGYxp99a6bu3PBDWG6qcpQ@mail.gmail.com>

Hi Jonathan,


    >>> Thanks for suggestions, I'll definately have a look of this library.

On Thu, Jan 31, 2013 at 2:49 PM, Jonathan Toomim <jtoomim at jtoomim.org>wrote:

> Take a look at pyglet. It's an AV library built on top of OpenGL with a
> ton of additional features; it also makes all of OpenGL available in the
> pyglet.gl module using a ctypes interface.
>
> http://www.pyglet.org/doc/**programming_guide/the_opengl_**interface.html<http://www.pyglet.org/doc/programming_guide/the_opengl_interface.html>
>
> It might not be the best package for you (pyopengl may be better), but
> it's definitely worth a look.
>
> Jonathan
>
>
> On 1/30/2013 1:20 AM, Shashidhar Paragonda wrote:
>
>> Dear Python hackers,
>>
>>         >>> I am new to OpenGL world and staring to work on some 3D
>> graphics
>> project.
>>         >>> My request is which is best / good python OpenGL library to
>> start working ( with documnetation ) ?
>>         >>> Thanks in advance for you help / suggestions / guidelines
>>
>>
> ______________________________**_________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/**mailman/listinfo/bangpypers<http://mail.python.org/mailman/listinfo/bangpypers>
>



-- 
-----------------------------------
Regards,

Shashidhar N.Paragonda
shashidhar85 at gmail.com
+919449073835

From nitin.nitp at gmail.com  Fri Feb  1 10:46:38 2013
From: nitin.nitp at gmail.com (Nitin Kumar)
Date: Fri, 1 Feb 2013 15:16:38 +0530
Subject: [BangPypers] trust/certify python exe
Message-ID: <CALqiT-s_maQFeYZx-zFPP-KDLdZnfjxrxcUaJNTjWB51SsXAbw@mail.gmail.com>

Hi All,

I am trying to automate one of the application.
This application (few fuctions which need high security) allow only those
exe to access there APIs which are trusted.

As python is not trusted, is there way we can trust/certify python exe/dlls?

I tried blow command but of no use for me

d:\visual studio 2010p\vc\bin>signtool sign /a c:\Python27\python.exe
SignTool Error: No certificates were found that met all the given criteria.

-- 
Nitin K

From baiju.m.mail at gmail.com  Fri Feb  1 11:14:33 2013
From: baiju.m.mail at gmail.com (Baiju M)
Date: Fri, 1 Feb 2013 15:44:33 +0530
Subject: [BangPypers] trust/certify python exe
In-Reply-To: <CALqiT-s_maQFeYZx-zFPP-KDLdZnfjxrxcUaJNTjWB51SsXAbw@mail.gmail.com>
References: <CALqiT-s_maQFeYZx-zFPP-KDLdZnfjxrxcUaJNTjWB51SsXAbw@mail.gmail.com>
Message-ID: <CAN8ZCby50_YGEUtx4q+1cJ2WbM2nEx=5efnEwFYXTPZmo-X0Lw@mail.gmail.com>

Hi Nitin,

The procedure to verify Python EXEs is given here (using PGP/GPG):
http://www.python.org/download/#openpgp-public-keys

On Fri, Feb 1, 2013 at 3:16 PM, Nitin Kumar <nitin.nitp at gmail.com> wrote:
> Hi All,
>
> I am trying to automate one of the application.
> This application (few fuctions which need high security) allow only those
> exe to access there APIs which are trusted.
>
> As python is not trusted, is there way we can trust/certify python exe/dlls?
>
> I tried blow command but of no use for me
>
> d:\visual studio 2010p\vc\bin>signtool sign /a c:\Python27\python.exe
> SignTool Error: No certificates were found that met all the given criteria.
>
> --
> Nitin K
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers

From saager.mhatre at gmail.com  Fri Feb  1 11:55:51 2013
From: saager.mhatre at gmail.com (Saager Mhatre)
Date: Fri, 1 Feb 2013 16:25:51 +0530
Subject: [BangPypers] Interactive shell for python application
In-Reply-To: <CAM4qvdHPQnMLu6TbXesatDcOc8HNh0MGDayY2wLZD_PgBxS2XQ@mail.gmail.com>
References: <CAM4qvdHPQnMLu6TbXesatDcOc8HNh0MGDayY2wLZD_PgBxS2XQ@mail.gmail.com>
Message-ID: <CADfLaaATaNrTJWntUs0K_-q_Dk1Q+fvt_Tor7pcmfUsuzqeWFg@mail.gmail.com>

On Mon, Jan 28, 2013 at 7:42 PM, JAGANADH G <jaganadhg at gmail.com> wrote:

> I need a shell like environment for my program


batteries included? http://docs.python.org/3/library/cmd.html

- d

From anandology at gmail.com  Mon Feb  4 06:29:48 2013
From: anandology at gmail.com (Anand Chitipothu)
Date: Mon, 4 Feb 2013 10:59:48 +0530
Subject: [BangPypers] [Commercial] Python Training Course
Message-ID: <CAC7wXFymfJ28RNS_wb8p8dAewGrAw4MiTyjxax1a5RTKR9oioQ@mail.gmail.com>

Hi,

I'm conducting a two day hands-on training course on Python
programming on February 16 & 17.

For more information and registration, please visit the course page at:

http://pythontraining-feb2013.doattend.com/

Please contact me offline if you have any questions.

Thanks,
Anand
http://anandology.com/

From nitin.nitp at gmail.com  Mon Feb  4 07:07:22 2013
From: nitin.nitp at gmail.com (Nitin Kumar)
Date: Mon, 4 Feb 2013 11:37:22 +0530
Subject: [BangPypers] trust/certify python exe
In-Reply-To: <CAN8ZCby50_YGEUtx4q+1cJ2WbM2nEx=5efnEwFYXTPZmo-X0Lw@mail.gmail.com>
References: <CALqiT-s_maQFeYZx-zFPP-KDLdZnfjxrxcUaJNTjWB51SsXAbw@mail.gmail.com>
	<CAN8ZCby50_YGEUtx4q+1cJ2WbM2nEx=5efnEwFYXTPZmo-X0Lw@mail.gmail.com>
Message-ID: <CALqiT-uSD1o3Mu17+C7u1S=SqsUEkkZ1kw_GcPH4=N_vh18XSw@mail.gmail.com>

Thanks Baiju,

But as the link suggest "Source and binary executables are signed by the
release manager using *their* OpenPGP key"
These personal signature wont work. Isn't there any sign from trusted
source say
Microsoft, verisign etc?

Nitin K


Nitin K


On Fri, Feb 1, 2013 at 3:44 PM, Baiju M <baiju.m.mail at gmail.com> wrote:

> Hi Nitin,
>
> The procedure to verify Python EXEs is given here (using PGP/GPG):
> http://www.python.org/download/#openpgp-public-keys
>
> On Fri, Feb 1, 2013 at 3:16 PM, Nitin Kumar <nitin.nitp at gmail.com> wrote:
> > Hi All,
> >
> > I am trying to automate one of the application.
> > This application (few fuctions which need high security) allow only those
> > exe to access there APIs which are trusted.
> >
> > As python is not trusted, is there way we can trust/certify python
> exe/dlls?
> >
> > I tried blow command but of no use for me
> >
> > d:\visual studio 2010p\vc\bin>signtool sign /a c:\Python27\python.exe
> > SignTool Error: No certificates were found that met all the given
> criteria.
> >
> > --
> > Nitin K
> > _______________________________________________
> > BangPypers mailing list
> > BangPypers at python.org
> > http://mail.python.org/mailman/listinfo/bangpypers
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>

From baiju.m.mail at gmail.com  Mon Feb  4 07:38:09 2013
From: baiju.m.mail at gmail.com (Baiju M)
Date: Mon, 4 Feb 2013 12:08:09 +0530
Subject: [BangPypers] trust/certify python exe
In-Reply-To: <CALqiT-uSD1o3Mu17+C7u1S=SqsUEkkZ1kw_GcPH4=N_vh18XSw@mail.gmail.com>
References: <CALqiT-s_maQFeYZx-zFPP-KDLdZnfjxrxcUaJNTjWB51SsXAbw@mail.gmail.com>
	<CAN8ZCby50_YGEUtx4q+1cJ2WbM2nEx=5efnEwFYXTPZmo-X0Lw@mail.gmail.com>
	<CALqiT-uSD1o3Mu17+C7u1S=SqsUEkkZ1kw_GcPH4=N_vh18XSw@mail.gmail.com>
Message-ID: <CAN8ZCbwGq49To8p1P6T0fjxeo=2ttH3nZ7UhugjDYMP+EeRMGQ@mail.gmail.com>

Hi Nithin,

Those individuals keys will be signed by many others.  Sometimes during
key signing party:
http://en.wikipedia.org/wiki/Key_signing_party

See somebody who you can trust has been signed those keys.


On Mon, Feb 4, 2013 at 11:37 AM, Nitin Kumar <nitin.nitp at gmail.com> wrote:
> Thanks Baiju,
>
> But as the link suggest "Source and binary executables are signed by the
> release manager using *their* OpenPGP key"
> These personal signature wont work. Isn't there any sign from trusted
> source say
> Microsoft, verisign etc?
>
> Nitin K
>
>
> Nitin K
>
>
> On Fri, Feb 1, 2013 at 3:44 PM, Baiju M <baiju.m.mail at gmail.com> wrote:
>
>> Hi Nitin,
>>
>> The procedure to verify Python EXEs is given here (using PGP/GPG):
>> http://www.python.org/download/#openpgp-public-keys
>>
>> On Fri, Feb 1, 2013 at 3:16 PM, Nitin Kumar <nitin.nitp at gmail.com> wrote:
>> > Hi All,
>> >
>> > I am trying to automate one of the application.
>> > This application (few fuctions which need high security) allow only those
>> > exe to access there APIs which are trusted.
>> >
>> > As python is not trusted, is there way we can trust/certify python
>> exe/dlls?
>> >
>> > I tried blow command but of no use for me
>> >
>> > d:\visual studio 2010p\vc\bin>signtool sign /a c:\Python27\python.exe
>> > SignTool Error: No certificates were found that met all the given
>> criteria.
>> >
>> > --
>> > Nitin K
>> > _______________________________________________
>> > BangPypers mailing list
>> > BangPypers at python.org
>> > http://mail.python.org/mailman/listinfo/bangpypers
>> _______________________________________________
>> BangPypers mailing list
>> BangPypers at python.org
>> http://mail.python.org/mailman/listinfo/bangpypers
>>
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers

From maniandram01 at gmail.com  Mon Feb  4 13:53:56 2013
From: maniandram01 at gmail.com (Ramchandra Apte)
Date: Mon, 4 Feb 2013 18:23:56 +0530
Subject: [BangPypers] trust/certify python exe
In-Reply-To: <CAN8ZCbwGq49To8p1P6T0fjxeo=2ttH3nZ7UhugjDYMP+EeRMGQ@mail.gmail.com>
References: <CALqiT-s_maQFeYZx-zFPP-KDLdZnfjxrxcUaJNTjWB51SsXAbw@mail.gmail.com>
	<CAN8ZCby50_YGEUtx4q+1cJ2WbM2nEx=5efnEwFYXTPZmo-X0Lw@mail.gmail.com>
	<CALqiT-uSD1o3Mu17+C7u1S=SqsUEkkZ1kw_GcPH4=N_vh18XSw@mail.gmail.com>
	<CAN8ZCbwGq49To8p1P6T0fjxeo=2ttH3nZ7UhugjDYMP+EeRMGQ@mail.gmail.com>
Message-ID: <CAExgZOiS+gnkGq6haxkn9VPHi3A1=9La1_u=y5YsrNzQQ5f4Hg@mail.gmail.com>

I don't think the Python binaries are signed by Microsoft; it is quite
costly to certify every release (even minor ones)


On 4 February 2013 12:08, Baiju M <baiju.m.mail at gmail.com> wrote:

> Hi Nithin,
>
> Those individuals keys will be signed by many others.  Sometimes during
> key signing party:
> http://en.wikipedia.org/wiki/Key_signing_party
>
> See somebody who you can trust has been signed those keys.
>
>
> On Mon, Feb 4, 2013 at 11:37 AM, Nitin Kumar <nitin.nitp at gmail.com> wrote:
> > Thanks Baiju,
> >
> > But as the link suggest "Source and binary executables are signed by the
> > release manager using *their* OpenPGP key"
> > These personal signature wont work. Isn't there any sign from trusted
> > source say
> > Microsoft, verisign etc?
> >
> > Nitin K
> >
> >
> > Nitin K
> >
> >
> > On Fri, Feb 1, 2013 at 3:44 PM, Baiju M <baiju.m.mail at gmail.com> wrote:
> >
> >> Hi Nitin,
> >>
> >> The procedure to verify Python EXEs is given here (using PGP/GPG):
> >> http://www.python.org/download/#openpgp-public-keys
> >>
> >> On Fri, Feb 1, 2013 at 3:16 PM, Nitin Kumar <nitin.nitp at gmail.com>
> wrote:
> >> > Hi All,
> >> >
> >> > I am trying to automate one of the application.
> >> > This application (few fuctions which need high security) allow only
> those
> >> > exe to access there APIs which are trusted.
> >> >
> >> > As python is not trusted, is there way we can trust/certify python
> >> exe/dlls?
> >> >
> >> > I tried blow command but of no use for me
> >> >
> >> > d:\visual studio 2010p\vc\bin>signtool sign /a c:\Python27\python.exe
> >> > SignTool Error: No certificates were found that met all the given
> >> criteria.
> >> >
> >> > --
> >> > Nitin K
> >> > _______________________________________________
> >> > BangPypers mailing list
> >> > BangPypers at python.org
> >> > http://mail.python.org/mailman/listinfo/bangpypers
> >> _______________________________________________
> >> BangPypers mailing list
> >> BangPypers at python.org
> >> http://mail.python.org/mailman/listinfo/bangpypers
> >>
> > _______________________________________________
> > BangPypers mailing list
> > BangPypers at python.org
> > http://mail.python.org/mailman/listinfo/bangpypers
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>

From karra.etc at gmail.com  Tue Feb  5 11:47:08 2013
From: karra.etc at gmail.com (Sriram Karra)
Date: Tue, 5 Feb 2013 16:17:08 +0530
Subject: [BangPypers] Interactive shell for python application
In-Reply-To: <CAM4qvdHPQnMLu6TbXesatDcOc8HNh0MGDayY2wLZD_PgBxS2XQ@mail.gmail.com>
References: <CAM4qvdHPQnMLu6TbXesatDcOc8HNh0MGDayY2wLZD_PgBxS2XQ@mail.gmail.com>
Message-ID: <CAFkt3UP-0yo_xuVKYGhG-CS5Yfptg0kgPPM6WTXECYV4mehp1g@mail.gmail.com>

On Mon, Jan 28, 2013 at 7:42 PM, JAGANADH G <jaganadhg at gmail.com> wrote:


> Is there any way to do the same. Any pointers to some examples or
> tutorials.
>

Er, did you try printing some log messages to keep you updated about the
progress?

In case you want something more heavy weight: (and perhaps a bit over kill
for this..) Check out: http://code.activestate.com/recipes/576515/

Go through that link. It's awesome. With that code included in your program
once you send  your program a SIGUSR1 it will interrupt the execution of
your code and immediately drop into a python prompt so  you can access the
complete program state. As I said it is perhaps over kill if you jus want
to know if your script is running or not... but wth, really. :)

From karra.etc at gmail.com  Tue Feb  5 17:28:36 2013
From: karra.etc at gmail.com (Sriram Karra)
Date: Tue, 5 Feb 2013 21:58:36 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
Message-ID: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>

I have a Declarative table defined as follows:

class Consultation(Base):
    __tablename__ = 'consultation'

    id         = Column(Integer, primary_key=True)
    patient_id = Column(Integer, ForeignKey('patient.id'))
    doctor_id  = Column(Integer, ForeignKey('doctor.id'))
    date       = Column(Date(),  default=MyT.today())

Each row in this table represents a single consultation instance of a
patient seeing a doctor on a given day.

I would like an additional attribute called "cid" that should be an
auto-incrementing value representing how many-th consultation it was in
that day. Basically it is an auto-incrementing counter, which gets reset to
0 at the start of a day (hence not unique, whereas the id will be unique).
No row is ever deleted.

How do I do achieve this with the least amount of additional database
space? It is trivial to have another table with one column for date and
another column for the total consultations thus far.

Any help?

-Karra

P.S. This is for PRS - an open source patient record system for small
clinics I am developing, and available at: https://github.com/skarra/PRS

From vinod.narasimhaiah at gmail.com  Wed Feb  6 06:45:39 2013
From: vinod.narasimhaiah at gmail.com (Vinod Kumar Narasimhaiah)
Date: Wed, 6 Feb 2013 11:15:39 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
In-Reply-To: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
References: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
Message-ID: <CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>

I am not a python programmer, but how about this logic?

add new field called "consultation_count" to the same table

before every insert to the table:

Check if the date field on the last record (you might want to add a
timestamp field to get the last record easily) = today's date

If yes, then it's the same day-
    take the consultation count from the last record, increment it by one
and create the new record.
If No, then it's a start of the new day-
    set the counter to 1 and create the new record.



On Tue, Feb 5, 2013 at 9:58 PM, Sriram Karra <karra.etc at gmail.com> wrote:

> I have a Declarative table defined as follows:
>
> class Consultation(Base):
>     __tablename__ = 'consultation'
>
>     id         = Column(Integer, primary_key=True)
>     patient_id = Column(Integer, ForeignKey('patient.id'))
>     doctor_id  = Column(Integer, ForeignKey('doctor.id'))
>     date       = Column(Date(),  default=MyT.today())
>
> Each row in this table represents a single consultation instance of a
> patient seeing a doctor on a given day.
>
> I would like an additional attribute called "cid" that should be an
> auto-incrementing value representing how many-th consultation it was in
> that day. Basically it is an auto-incrementing counter, which gets reset to
> 0 at the start of a day (hence not unique, whereas the id will be unique).
> No row is ever deleted.
>
> How do I do achieve this with the least amount of additional database
> space? It is trivial to have another table with one column for date and
> another column for the total consultations thus far.
>
> Any help?
>
> -Karra
>
> P.S. This is for PRS - an open source patient record system for small
> clinics I am developing, and available at: https://github.com/skarra/PRS
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>

From dhruvbaldawa at gmail.com  Wed Feb  6 07:02:45 2013
From: dhruvbaldawa at gmail.com (Dhruv Baldawa)
Date: Wed, 6 Feb 2013 11:32:45 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
In-Reply-To: <CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
References: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
	<CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
Message-ID: <CAC5Hnjgga6bq1n63yR3AUx4mOLTTJJvz=9--2=roMJkWLNfB5A@mail.gmail.com>

I would do a:

class Consultation(Base):
    __tablename__ = 'consultation'

    id         = Column(Integer, primary_key=True)
    patient_id = Column(Integer, ForeignKey('patient.id'))
    doctor_id  = Column(Integer, ForeignKey('doctor.id'))
    date       = Column(Date(),  default=MyT.today())

   @property
   def consultation_count(self):
        ''' returns the consultation count for current date '''
        return self.query.filter_by(date=self.date).count() # the syntax
might not be correct

c = Consultation.query.get(1)
print c.consultation_count

This way its computed on the fly and you dont need to store it.

--
Dhruv Baldawa
(http://www.dhruvb.com)


On Wed, Feb 6, 2013 at 11:15 AM, Vinod Kumar Narasimhaiah <
vinod.narasimhaiah at gmail.com> wrote:

> I am not a python programmer, but how about this logic?
>
> add new field called "consultation_count" to the same table
>
> before every insert to the table:
>
> Check if the date field on the last record (you might want to add a
> timestamp field to get the last record easily) = today's date
>
> If yes, then it's the same day-
>     take the consultation count from the last record, increment it by one
> and create the new record.
> If No, then it's a start of the new day-
>     set the counter to 1 and create the new record.
>
>
>
> On Tue, Feb 5, 2013 at 9:58 PM, Sriram Karra <karra.etc at gmail.com> wrote:
>
> > I have a Declarative table defined as follows:
> >
> > class Consultation(Base):
> >     __tablename__ = 'consultation'
> >
> >     id         = Column(Integer, primary_key=True)
> >     patient_id = Column(Integer, ForeignKey('patient.id'))
> >     doctor_id  = Column(Integer, ForeignKey('doctor.id'))
> >     date       = Column(Date(),  default=MyT.today())
> >
> > Each row in this table represents a single consultation instance of a
> > patient seeing a doctor on a given day.
> >
> > I would like an additional attribute called "cid" that should be an
> > auto-incrementing value representing how many-th consultation it was in
> > that day. Basically it is an auto-incrementing counter, which gets reset
> to
> > 0 at the start of a day (hence not unique, whereas the id will be
> unique).
> > No row is ever deleted.
> >
> > How do I do achieve this with the least amount of additional database
> > space? It is trivial to have another table with one column for date and
> > another column for the total consultations thus far.
> >
> > Any help?
> >
> > -Karra
> >
> > P.S. This is for PRS - an open source patient record system for small
> > clinics I am developing, and available at: https://github.com/skarra/PRS
> > _______________________________________________
> > BangPypers mailing list
> > BangPypers at python.org
> > http://mail.python.org/mailman/listinfo/bangpypers
> >
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>

From karra.etc at gmail.com  Wed Feb  6 07:17:52 2013
From: karra.etc at gmail.com (Sriram Karra)
Date: Wed, 6 Feb 2013 11:47:52 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
In-Reply-To: <CAC5Hnjgga6bq1n63yR3AUx4mOLTTJJvz=9--2=roMJkWLNfB5A@mail.gmail.com>
References: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
	<CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
	<CAC5Hnjgga6bq1n63yR3AUx4mOLTTJJvz=9--2=roMJkWLNfB5A@mail.gmail.com>
Message-ID: <CAFkt3UMVbC_TNauPFXPZzk+FgNtG_GSD0-FAg1jNrYxV9w7d4g@mail.gmail.com>

On Wed, Feb 6, 2013 at 11:32 AM, Dhruv Baldawa <dhruvbaldawa at gmail.com>wrote:

> I would do a:
>
> class Consultation(Base):
>     __tablename__ = 'consultation'
>
>     id         = Column(Integer, primary_key=True)
>     patient_id = Column(Integer, ForeignKey('patient.id'))
>     doctor_id  = Column(Integer, ForeignKey('doctor.id'))
>     date       = Column(Date(),  default=MyT.today())
>
>    @property
>    def consultation_count(self):
>         ''' returns the consultation count for current date '''
>         return self.query.filter_by(date=self.date).count() # the syntax
> might not be correct
>
> c = Consultation.query.get(1)
> print c.consultation_count
>
> This way its computed on the fly and you dont need to store it.
>

If I read your code correctly this would mean:

(a) the consultation_count property for all the consutlations that happened
on a given day will be the same value
(b) for a given row this value will keep changing as we insert more records
into the table.

So this will not work, no?

From karra.etc at gmail.com  Wed Feb  6 07:20:13 2013
From: karra.etc at gmail.com (Sriram Karra)
Date: Wed, 6 Feb 2013 11:50:13 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
In-Reply-To: <CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
References: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
	<CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
Message-ID: <CAFkt3UNSihRfKi+ckxy5Mm3fk_b4vktw6OrAVGRWZQrixvXNdw@mail.gmail.com>

Vinod, thanks for these inputs. Part of hte problem is the SQLAlchemy
syntax itself and getting it to work!

Further, in the actual use case, I cannot assume that the records will be
inserted in the serial order of day. A patient can call and make an
appointment for a later date, and after that a patient might walk in for
the same day. Hm...

-Karra


On Wed, Feb 6, 2013 at 11:15 AM, Vinod Kumar Narasimhaiah <
vinod.narasimhaiah at gmail.com> wrote:

> I am not a python programmer, but how about this logic?
>
> add new field called "consultation_count" to the same table
>
> before every insert to the table:
>
> Check if the date field on the last record (you might want to add a
> timestamp field to get the last record easily) = today's date
>
> If yes, then it's the same day-
>     take the consultation count from the last record, increment it by one
> and create the new record.
> If No, then it's a start of the new day-
>     set the counter to 1 and create the new record.
>
>
>
> On Tue, Feb 5, 2013 at 9:58 PM, Sriram Karra <karra.etc at gmail.com> wrote:
>
> > I have a Declarative table defined as follows:
> >
> > class Consultation(Base):
> >     __tablename__ = 'consultation'
> >
> >     id         = Column(Integer, primary_key=True)
> >     patient_id = Column(Integer, ForeignKey('patient.id'))
> >     doctor_id  = Column(Integer, ForeignKey('doctor.id'))
> >     date       = Column(Date(),  default=MyT.today())
> >
> > Each row in this table represents a single consultation instance of a
> > patient seeing a doctor on a given day.
> >
> > I would like an additional attribute called "cid" that should be an
> > auto-incrementing value representing how many-th consultation it was in
> > that day. Basically it is an auto-incrementing counter, which gets reset
> to
> > 0 at the start of a day (hence not unique, whereas the id will be
> unique).
> > No row is ever deleted.
> >
> > How do I do achieve this with the least amount of additional database
> > space? It is trivial to have another table with one column for date and
> > another column for the total consultations thus far.
> >
> > Any help?
> >
> > -Karra
> >
> > P.S. This is for PRS - an open source patient record system for small
> > clinics I am developing, and available at: https://github.com/skarra/PRS
> > _______________________________________________
> > BangPypers mailing list
> > BangPypers at python.org
> > http://mail.python.org/mailman/listinfo/bangpypers
> >
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>

From dhruvbaldawa at gmail.com  Wed Feb  6 07:35:05 2013
From: dhruvbaldawa at gmail.com (Dhruv Baldawa)
Date: Wed, 6 Feb 2013 12:05:05 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
In-Reply-To: <CAFkt3UMVbC_TNauPFXPZzk+FgNtG_GSD0-FAg1jNrYxV9w7d4g@mail.gmail.com>
References: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
	<CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
	<CAC5Hnjgga6bq1n63yR3AUx4mOLTTJJvz=9--2=roMJkWLNfB5A@mail.gmail.com>
	<CAFkt3UMVbC_TNauPFXPZzk+FgNtG_GSD0-FAg1jNrYxV9w7d4g@mail.gmail.com>
Message-ID: <CAC5Hnjhx9QwB931EqnNvjG-Xw85eZd80ua7oV+LVYZDt2+E95w@mail.gmail.com>

OK I misread. Let me see if I understood your problem correctly.

   1. All the consultations will be stored in that table.
   2. When you have a Consultation object, you need a `consultation_count`
   property for the number of consultation for that day.

So, this should work now, according to me:

def generate_consultation_id(date):
     return Consultation.query.filter_by(data=data).count() + 1

class Consultation(Base):
    ...
    cid = Column(Integer, default=generate_consultation_id)

This should work, according to me. The function is called while adding the
id to the database.
Reference<http://docs.sqlalchemy.org/en/rel_0_8/core/schema.html#sqlalchemy.schema.Column.__init__>

--
Dhruv Baldawa
(http://www.dhruvb.com)


On Wed, Feb 6, 2013 at 11:47 AM, Sriram Karra <karra.etc at gmail.com> wrote:

> On Wed, Feb 6, 2013 at 11:32 AM, Dhruv Baldawa <dhruvbaldawa at gmail.com
> >wrote:
>
> > I would do a:
> >
> > class Consultation(Base):
> >     __tablename__ = 'consultation'
> >
> >     id         = Column(Integer, primary_key=True)
> >     patient_id = Column(Integer, ForeignKey('patient.id'))
> >     doctor_id  = Column(Integer, ForeignKey('doctor.id'))
> >     date       = Column(Date(),  default=MyT.today())
> >
> >    @property
> >    def consultation_count(self):
> >         ''' returns the consultation count for current date '''
> >         return self.query.filter_by(date=self.date).count() # the syntax
> > might not be correct
> >
> > c = Consultation.query.get(1)
> > print c.consultation_count
> >
> > This way its computed on the fly and you dont need to store it.
> >
>
> If I read your code correctly this would mean:
>
> (a) the consultation_count property for all the consutlations that happened
> on a given day will be the same value
> (b) for a given row this value will keep changing as we insert more records
> into the table.
>
> So this will not work, no?
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>

From thavamuni at gmail.com  Wed Feb  6 09:07:12 2013
From: thavamuni at gmail.com (Thava Alagu)
Date: Wed, 6 Feb 2013 13:37:12 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
Message-ID: <CAEQL+9eYDqTqpnfW_oNpntdLQ3wNYpu4u0o-fEAVcdZ8w9fuuw@mail.gmail.com>

Hi Karra,

> Further, in the actual use case, I cannot assume that the records will be
> inserted in the serial order of day. A patient can call and make an
> appointment for a later date, and after that a patient might walk in for
> the same day. Hm...
>
> -Karra

Since you want more flexible system, I recommend that you add more columns--
apt date, reservation date, actual visit date and *time* of consultation.
To maintain our own sanity when records are accidentally updated,
this will help to trace the problem.

Not sure if you want the 'consultation-day-id' as a handy parameter for
reference *after* the consultation or even before the consultation.
If it is for before-use, then you can generate the 'priority-of-the-day-id'
by writing a query which depends on the apt-date.
If it is for later-use, you can require that the consultation-time be unique,
(data-entry operator can probably re-enter the record to adjust the minute
or even seconds to make the record unique). You can derive the consultation-id
from the consultation time either by post bulk processing or
generating it on the fly.

I have not used SQLAlchemy, but almost all database systems require you
that there is only one built-in auto-increment column per table. If
you want more,
you will have to simulate it. One alternative is to use just another
'auxilary-table'
just for the purpose of generating auto-increment value which you can use it
to explicitly insert on to other table-- not recommended, but there is a way.

In a nutshell, it seems to me that the real information you need in there
is the actual-consultation-time to be precise. Ignoring that and adding
numerous other data and trying to keep them consistent may not help.
Just some initial thoughts and impressions from me.

Regards,
-thava

On Wed, Feb 6, 2013 at 11:50 AM,  <bangpypers-request at python.org> wrote:
> Send BangPypers mailing list submissions to
>         bangpypers at python.org
>
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> than "Re: Contents of BangPypers digest..."
>
>
> Today's Topics:
>
>    1. SQLAlchemy and 'non-trivial' default values for a column
>       (Sriram Karra)
>    2. Re: SQLAlchemy and 'non-trivial' default values for a     column
>       (Vinod Kumar Narasimhaiah)
>    3. Re: SQLAlchemy and 'non-trivial' default values for a     column
>       (Dhruv Baldawa)
>    4. Re: SQLAlchemy and 'non-trivial' default values for a     column
>       (Sriram Karra)
>    5. Re: SQLAlchemy and 'non-trivial' default values for a     column
>       (Sriram Karra)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 5 Feb 2013 21:58:36 +0530
> From: Sriram Karra <karra.etc at gmail.com>
> To: Bangalore Python Users Group - India <BangPypers at python.org>
> Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for
>         a       column
> Message-ID:
>         <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> I have a Declarative table defined as follows:
>
> class Consultation(Base):
>     __tablename__ = 'consultation'
>
>     id         = Column(Integer, primary_key=True)
>     patient_id = Column(Integer, ForeignKey('patient.id'))
>     doctor_id  = Column(Integer, ForeignKey('doctor.id'))
>     date       = Column(Date(),  default=MyT.today())
>
> Each row in this table represents a single consultation instance of a
> patient seeing a doctor on a given day.
>
> I would like an additional attribute called "cid" that should be an
> auto-incrementing value representing how many-th consultation it was in
> that day. Basically it is an auto-incrementing counter, which gets reset to
> 0 at the start of a day (hence not unique, whereas the id will be unique).
> No row is ever deleted.
>
> How do I do achieve this with the least amount of additional database
> space? It is trivial to have another table with one column for date and
> another column for the total consultations thus far.
>
> Any help?
>
> -Karra
>
> P.S. This is for PRS - an open source patient record system for small
> clinics I am developing, and available at: https://github.com/skarra/PRS
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 6 Feb 2013 11:15:39 +0530
> From: Vinod Kumar Narasimhaiah <vinod.narasimhaiah at gmail.com>
> To: Bangalore Python Users Group - India <bangpypers at python.org>
> Subject: Re: [BangPypers] SQLAlchemy and 'non-trivial' default values
>         for a   column
> Message-ID:
>         <CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> I am not a python programmer, but how about this logic?
>
> add new field called "consultation_count" to the same table
>
> before every insert to the table:
>
> Check if the date field on the last record (you might want to add a
> timestamp field to get the last record easily) = today's date
>
> If yes, then it's the same day-
>     take the consultation count from the last record, increment it by one
> and create the new record.
> If No, then it's a start of the new day-
>     set the counter to 1 and create the new record.
>
>
>
> On Tue, Feb 5, 2013 at 9:58 PM, Sriram Karra <karra.etc at gmail.com> wrote:
>
>> I have a Declarative table defined as follows:
>>
>> class Consultation(Base):
>>     __tablename__ = 'consultation'
>>
>>     id         = Column(Integer, primary_key=True)
>>     patient_id = Column(Integer, ForeignKey('patient.id'))
>>     doctor_id  = Column(Integer, ForeignKey('doctor.id'))
>>     date       = Column(Date(),  default=MyT.today())
>>
>> Each row in this table represents a single consultation instance of a
>> patient seeing a doctor on a given day.
>>
>> I would like an additional attribute called "cid" that should be an
>> auto-incrementing value representing how many-th consultation it was in
>> that day. Basically it is an auto-incrementing counter, which gets reset to
>> 0 at the start of a day (hence not unique, whereas the id will be unique).
>> No row is ever deleted.
>>
>> How do I do achieve this with the least amount of additional database
>> space? It is trivial to have another table with one column for date and
>> another column for the total consultations thus far.
>>
>> Any help?
>>
>> -Karra
>>
>> P.S. This is for PRS - an open source patient record system for small
>> clinics I am developing, and available at: https://github.com/skarra/PRS
>> _______________________________________________
>> BangPypers mailing list
>> BangPypers at python.org
>> http://mail.python.org/mailman/listinfo/bangpypers
>>
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 6 Feb 2013 11:32:45 +0530
> From: Dhruv Baldawa <dhruvbaldawa at gmail.com>
> To: Bangalore Python Users Group - India <bangpypers at python.org>
> Subject: Re: [BangPypers] SQLAlchemy and 'non-trivial' default values
>         for a   column
> Message-ID:
>         <CAC5Hnjgga6bq1n63yR3AUx4mOLTTJJvz=9--2=roMJkWLNfB5A at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> I would do a:
>
> class Consultation(Base):
>     __tablename__ = 'consultation'
>
>     id         = Column(Integer, primary_key=True)
>     patient_id = Column(Integer, ForeignKey('patient.id'))
>     doctor_id  = Column(Integer, ForeignKey('doctor.id'))
>     date       = Column(Date(),  default=MyT.today())
>
>    @property
>    def consultation_count(self):
>         ''' returns the consultation count for current date '''
>         return self.query.filter_by(date=self.date).count() # the syntax
> might not be correct
>
> c = Consultation.query.get(1)
> print c.consultation_count
>
> This way its computed on the fly and you dont need to store it.
>
> --
> Dhruv Baldawa
> (http://www.dhruvb.com)
>
>
> On Wed, Feb 6, 2013 at 11:15 AM, Vinod Kumar Narasimhaiah <
> vinod.narasimhaiah at gmail.com> wrote:
>
>> I am not a python programmer, but how about this logic?
>>
>> add new field called "consultation_count" to the same table
>>
>> before every insert to the table:
>>
>> Check if the date field on the last record (you might want to add a
>> timestamp field to get the last record easily) = today's date
>>
>> If yes, then it's the same day-
>>     take the consultation count from the last record, increment it by one
>> and create the new record.
>> If No, then it's a start of the new day-
>>     set the counter to 1 and create the new record.
>>
>>
>>
>> On Tue, Feb 5, 2013 at 9:58 PM, Sriram Karra <karra.etc at gmail.com> wrote:
>>
>> > I have a Declarative table defined as follows:
>> >
>> > class Consultation(Base):
>> >     __tablename__ = 'consultation'
>> >
>> >     id         = Column(Integer, primary_key=True)
>> >     patient_id = Column(Integer, ForeignKey('patient.id'))
>> >     doctor_id  = Column(Integer, ForeignKey('doctor.id'))
>> >     date       = Column(Date(),  default=MyT.today())
>> >
>> > Each row in this table represents a single consultation instance of a
>> > patient seeing a doctor on a given day.
>> >
>> > I would like an additional attribute called "cid" that should be an
>> > auto-incrementing value representing how many-th consultation it was in
>> > that day. Basically it is an auto-incrementing counter, which gets reset
>> to
>> > 0 at the start of a day (hence not unique, whereas the id will be
>> unique).
>> > No row is ever deleted.
>> >
>> > How do I do achieve this with the least amount of additional database
>> > space? It is trivial to have another table with one column for date and
>> > another column for the total consultations thus far.
>> >
>> > Any help?
>> >
>> > -Karra
>> >
>> > P.S. This is for PRS - an open source patient record system for small
>> > clinics I am developing, and available at: https://github.com/skarra/PRS
>> > _______________________________________________
>> > BangPypers mailing list
>> > BangPypers at python.org
>> > http://mail.python.org/mailman/listinfo/bangpypers
>> >
>> _______________________________________________
>> BangPypers mailing list
>> BangPypers at python.org
>> http://mail.python.org/mailman/listinfo/bangpypers
>>
>
>
> ------------------------------
>
> Message: 4
> Date: Wed, 6 Feb 2013 11:47:52 +0530
> From: Sriram Karra <karra.etc at gmail.com>
> To: Bangalore Python Users Group - India <bangpypers at python.org>
> Subject: Re: [BangPypers] SQLAlchemy and 'non-trivial' default values
>         for a   column
> Message-ID:
>         <CAFkt3UMVbC_TNauPFXPZzk+FgNtG_GSD0-FAg1jNrYxV9w7d4g at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> On Wed, Feb 6, 2013 at 11:32 AM, Dhruv Baldawa <dhruvbaldawa at gmail.com>wrote:
>
>> I would do a:
>>
>> class Consultation(Base):
>>     __tablename__ = 'consultation'
>>
>>     id         = Column(Integer, primary_key=True)
>>     patient_id = Column(Integer, ForeignKey('patient.id'))
>>     doctor_id  = Column(Integer, ForeignKey('doctor.id'))
>>     date       = Column(Date(),  default=MyT.today())
>>
>>    @property
>>    def consultation_count(self):
>>         ''' returns the consultation count for current date '''
>>         return self.query.filter_by(date=self.date).count() # the syntax
>> might not be correct
>>
>> c = Consultation.query.get(1)
>> print c.consultation_count
>>
>> This way its computed on the fly and you dont need to store it.
>>
>
> If I read your code correctly this would mean:
>
> (a) the consultation_count property for all the consutlations that happened
> on a given day will be the same value
> (b) for a given row this value will keep changing as we insert more records
> into the table.
>
> So this will not work, no?
>
>
> ------------------------------
>
> Message: 5
> Date: Wed, 6 Feb 2013 11:50:13 +0530
> From: Sriram Karra <karra.etc at gmail.com>
> To: Bangalore Python Users Group - India <bangpypers at python.org>
> Subject: Re: [BangPypers] SQLAlchemy and 'non-trivial' default values
>         for a   column
> Message-ID:
>         <CAFkt3UNSihRfKi+ckxy5Mm3fk_b4vktw6OrAVGRWZQrixvXNdw at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Vinod, thanks for these inputs. Part of hte problem is the SQLAlchemy
> syntax itself and getting it to work!
>
> Further, in the actual use case, I cannot assume that the records will be
> inserted in the serial order of day. A patient can call and make an
> appointment for a later date, and after that a patient might walk in for
> the same day. Hm...
>
> -Karra
>
>
> On Wed, Feb 6, 2013 at 11:15 AM, Vinod Kumar Narasimhaiah <
> vinod.narasimhaiah at gmail.com> wrote:
>
>> I am not a python programmer, but how about this logic?
>>
>> add new field called "consultation_count" to the same table
>>
>> before every insert to the table:
>>
>> Check if the date field on the last record (you might want to add a
>> timestamp field to get the last record easily) = today's date
>>
>> If yes, then it's the same day-
>>     take the consultation count from the last record, increment it by one
>> and create the new record.
>> If No, then it's a start of the new day-
>>     set the counter to 1 and create the new record.
>>
>>
>>
>> On Tue, Feb 5, 2013 at 9:58 PM, Sriram Karra <karra.etc at gmail.com> wrote:
>>
>> > I have a Declarative table defined as follows:
>> >
>> > class Consultation(Base):
>> >     __tablename__ = 'consultation'
>> >
>> >     id         = Column(Integer, primary_key=True)
>> >     patient_id = Column(Integer, ForeignKey('patient.id'))
>> >     doctor_id  = Column(Integer, ForeignKey('doctor.id'))
>> >     date       = Column(Date(),  default=MyT.today())
>> >
>> > Each row in this table represents a single consultation instance of a
>> > patient seeing a doctor on a given day.
>> >
>> > I would like an additional attribute called "cid" that should be an
>> > auto-incrementing value representing how many-th consultation it was in
>> > that day. Basically it is an auto-incrementing counter, which gets reset
>> to
>> > 0 at the start of a day (hence not unique, whereas the id will be
>> unique).
>> > No row is ever deleted.
>> >
>> > How do I do achieve this with the least amount of additional database
>> > space? It is trivial to have another table with one column for date and
>> > another column for the total consultations thus far.
>> >
>> > Any help?
>> >
>> > -Karra
>> >
>> > P.S. This is for PRS - an open source patient record system for small
>> > clinics I am developing, and available at: https://github.com/skarra/PRS
>> > _______________________________________________
>> > BangPypers mailing list
>> > BangPypers at python.org
>> > http://mail.python.org/mailman/listinfo/bangpypers
>> >
>> _______________________________________________
>> BangPypers mailing list
>> BangPypers at python.org
>> http://mail.python.org/mailman/listinfo/bangpypers
>>
>
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>
>
> ------------------------------
>
> End of BangPypers Digest, Vol 66, Issue 4
> *****************************************

From kracethekingmaker at gmail.com  Fri Feb  8 12:24:55 2013
From: kracethekingmaker at gmail.com (kracekumar ramaraju)
Date: Fri, 8 Feb 2013 16:54:55 +0530
Subject: [BangPypers] Feb meetup
Message-ID: <CAO5c=mkJuRf1hKqCoy9bxBKDCPoKh3MqDsS7F9eUF-tUh2aDYA@mail.gmail.com>

All,

Feb Meetup will be on 16th, as usual 3.00 PM, shall we have meetup in CIS
or for other place, do suggest, Feel free to propose lighting talk/30 mins
talk.

-- 
*
Thanks & Regards

"Talk is cheap, show me the code" -- Linus Torvalds
kracekumar
www.kracekumar.com
*

From chirag740 at gmail.com  Sun Feb 10 01:03:09 2013
From: chirag740 at gmail.com (Chirag Vora)
Date: Sun, 10 Feb 2013 05:33:09 +0530
Subject: [BangPypers] Using emacs for python development
Message-ID: <CAO94qUwgE9_tpxp4PiH3xj789OjjuENfBYhT4ZQYhb1k_GYVFA@mail.gmail.com>

http://www.bio-python.com/2012/12/developing-python-ide-using-emacs.html

Hope some of you find this useful.

Regards,
*Chirag Vora*

From shabda at agiliq.com  Mon Feb 11 09:41:19 2013
From: shabda at agiliq.com (Shabda Raaj)
Date: Mon, 11 Feb 2013 14:11:19 +0530
Subject: [BangPypers] [Hyderabad] Introduction to Python Workshop on
	February 15th, 2013
Message-ID: <CALTVfMGTr2O=joFXkgCLMnHC+B_=1v8SUSebg_4PcVHwa3U65A@mail.gmail.com>

(Cross posting here as Bangpypers member probably know a lot of Hyd people
who may be interested in this.)

Announcement:

http://agiliq.com/blog/2013/02/introduction-to-python-workshop-on-february-15th-2/

Details:

We are conducting an *"Introduction to Python"* workshop at our
office<http://agiliq.com/contactus#map>on
*February 15th, 2013 (Friday)* between *5-8PM IST*. This workshop is geared
towards those who are planning to learn python.

Topics:

   - Language features
   - Variables
   - Built in data structures
   - Functions
   - Object Oriented Programming
   - Demo writing a simple program

Prerequisites to attend this session:

   - A laptop with any linux flavour (OR) a laptop with Python installed in
   it.

Register <http://bit.ly/Yf0eiH> for the workshop by filling up the form.


-- 
Thanks,
Shabda

Agiliq.com - Building Amazing Apps
agiliq.com/blog/ | github.com/agiliq
US: +13152854388 | IN: +919949997612 | Skype: shabda.raaj
Our Android Apps <https://play.google.com/store/apps/developer?id=Agiliq> | Our
iOS Apps <https://itunes.apple.com/us/artist/agiliq/id407918088>

From jtoomim at jtoomim.org  Mon Feb 11 13:25:55 2013
From: jtoomim at jtoomim.org (Jonathan Toomim)
Date: Mon, 11 Feb 2013 17:55:55 +0530
Subject: [BangPypers] Feb meetup
In-Reply-To: <CAO5c=mkJuRf1hKqCoy9bxBKDCPoKh3MqDsS7F9eUF-tUh2aDYA@mail.gmail.com>
References: <CAO5c=mkJuRf1hKqCoy9bxBKDCPoKh3MqDsS7F9eUF-tUh2aDYA@mail.gmail.com>
Message-ID: <5118E353.8000605@jtoomim.org>

I can give a quick talk on my HEG/near-infrared spectroscopy work.

On 2/8/2013 4:54 PM, kracekumar ramaraju wrote:
> All,
>
> Feb Meetup will be on 16th, as usual 3.00 PM, shall we have meetup in CIS
> or for other place, do suggest, Feel free to propose lighting talk/30 mins
> talk.
>


From kracekumar at hasgeek.com  Mon Feb 11 16:59:06 2013
From: kracekumar at hasgeek.com (Kracekumar Ramaraju)
Date: Mon, 11 Feb 2013 21:29:06 +0530
Subject: [BangPypers] Feb meetup
In-Reply-To: <5118E353.8000605@jtoomim.org>
References: <CAO5c=mkJuRf1hKqCoy9bxBKDCPoKh3MqDsS7F9eUF-tUh2aDYA@mail.gmail.com>
	<5118E353.8000605@jtoomim.org>
Message-ID: <CANYmPWRruPs2kw__y8a4xMqUXQFURhkqpSFyRWApX8Rd_M6k9A@mail.gmail.com>

Hope there are uses of python in the project.

On Mon, Feb 11, 2013 at 5:55 PM, Jonathan Toomim <jtoomim at jtoomim.org>wrote:

> I can give a quick talk on my HEG/near-infrared spectroscopy work.
>
>
> On 2/8/2013 4:54 PM, kracekumar ramaraju wrote:
>
>> All,
>>
>> Feb Meetup will be on 16th, as usual 3.00 PM, shall we have meetup in CIS
>> or for other place, do suggest, Feel free to propose lighting talk/30 mins
>> talk.
>>
>>
> ______________________________**_________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/**mailman/listinfo/bangpypers<http://mail.python.org/mailman/listinfo/bangpypers>
>



-- 
Regards
Kracekumar.R
"Talk is cheap, show me the code" -- Linus Torvalds

From jtoomim at jtoomim.org  Tue Feb 12 00:15:34 2013
From: jtoomim at jtoomim.org (Jonathan Toomim)
Date: Tue, 12 Feb 2013 04:45:34 +0530
Subject: [BangPypers] Feb meetup
In-Reply-To: <CANYmPWRruPs2kw__y8a4xMqUXQFURhkqpSFyRWApX8Rd_M6k9A@mail.gmail.com>
References: <CAO5c=mkJuRf1hKqCoy9bxBKDCPoKh3MqDsS7F9eUF-tUh2aDYA@mail.gmail.com>
	<5118E353.8000605@jtoomim.org>
	<CANYmPWRruPs2kw__y8a4xMqUXQFURhkqpSFyRWApX8Rd_M6k9A@mail.gmail.com>
Message-ID: <51197B96.1040703@jtoomim.org>

The software I wrote to give people realtime feedback on their brain 
state is open source and 100% Python.

On 2/11/2013 9:29 PM, Kracekumar Ramaraju wrote:
> Hope there are uses of python in the project.
>
> On Mon, Feb 11, 2013 at 5:55 PM, Jonathan Toomim <jtoomim at jtoomim.org>wrote:
>
>> I can give a quick talk on my HEG/near-infrared spectroscopy work.
>>
>>
>> On 2/8/2013 4:54 PM, kracekumar ramaraju wrote:
>>
>>> All,
>>>
>>> Feb Meetup will be on 16th, as usual 3.00 PM, shall we have meetup in CIS
>>> or for other place, do suggest, Feel free to propose lighting talk/30 mins
>>> talk.
>>>
>>>
>> ______________________________**_________________
>> BangPypers mailing list
>> BangPypers at python.org
>> http://mail.python.org/**mailman/listinfo/bangpypers<http://mail.python.org/mailman/listinfo/bangpypers>
>>
>
>


From karra.etc at gmail.com  Tue Feb 12 02:43:51 2013
From: karra.etc at gmail.com (Sriram Karra)
Date: Tue, 12 Feb 2013 07:13:51 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
In-Reply-To: <CAC5Hnjhx9QwB931EqnNvjG-Xw85eZd80ua7oV+LVYZDt2+E95w@mail.gmail.com>
References: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
	<CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
	<CAC5Hnjgga6bq1n63yR3AUx4mOLTTJJvz=9--2=roMJkWLNfB5A@mail.gmail.com>
	<CAFkt3UMVbC_TNauPFXPZzk+FgNtG_GSD0-FAg1jNrYxV9w7d4g@mail.gmail.com>
	<CAC5Hnjhx9QwB931EqnNvjG-Xw85eZd80ua7oV+LVYZDt2+E95w@mail.gmail.com>
Message-ID: <CAFkt3UOu0YYcUiZS-aTPbfFQYrtQ0p9+5xyLQ8YHHM75iOANAw@mail.gmail.com>

On Wed, Feb 6, 2013 at 12:05 PM, Dhruv Baldawa <dhruvbaldawa at gmail.com>wrote:

> OK I misread. Let me see if I understood your problem correctly.
>
>    1. All the consultations will be stored in that table.
>    2. When you have a Consultation object, you need a `consultation_count`
>    property for the number of consultation for that day.
>
> So, this should work now, according to me:
>
> def generate_consultation_id(date):
>      return Consultation.query.filter_by(data=data).count() + 1
>
>
I assume you meant 'date=date' in the method body.


> class Consultation(Base):
>     ...
>     cid = Column(Integer, default=generate_consultation_id)
>
> This should work, according to me. The function is called while adding the
> id to the database.


Thanks a lot. It does appear to work. Just a clarification - I have two
sessions initialized - one for a demo database and one for a production
database and allow the users to switch between the two (for staff training,
or feature exploration purposes). I tested it briefly and the counts are
correctly incremented for whichever session is currently active. Just
wanted to confirm that behaviour will be consistent.

From karra.etc at gmail.com  Tue Feb 12 02:49:12 2013
From: karra.etc at gmail.com (Sriram Karra)
Date: Tue, 12 Feb 2013 07:19:12 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
In-Reply-To: <CAEQL+9eYDqTqpnfW_oNpntdLQ3wNYpu4u0o-fEAVcdZ8w9fuuw@mail.gmail.com>
References: <CAEQL+9eYDqTqpnfW_oNpntdLQ3wNYpu4u0o-fEAVcdZ8w9fuuw@mail.gmail.com>
Message-ID: <CAFkt3UPNq+FBJ1QpfHhbrNTeBFjCjNNjdOXuDz-RF+0F6Hb8iQ@mail.gmail.com>

On Wed, Feb 6, 2013 at 1:37 PM, Thava Alagu <thavamuni at gmail.com> wrote:

> Hi Karra,
>
>
> Since you want more flexible system, I recommend that you add more
> columns--
> apt date, reservation date, actual visit date and *time* of consultation.
>

I have some of those fields, but did not show them in my mail in the
interest of clarity.


> To maintain our own sanity when records are accidentally updated,
> this will help to trace the problem.
>
> Not sure if you want the 'consultation-day-id' as a handy parameter for
> reference *after* the consultation or even before the consultation.
>

It is a quirk of how the clinic operates. I generate a printout with
patient detail, doctor details etc. during registration. During subsequent
visits the clerk will (a) enter details in teh system and (b) make a note
by pen on the paper the patient is expected to bring with him/her. A new
printout is issued only when the paper gets fully used or the patient loses
it.

So we just need a unique ID per visit to be noted on the paper by hand for
reference. the actual format of the unique ID was a request from the
administration.

Dhruv had suggested a solution that works. I'll go with it

Cheers,
-Karra.

From dhruvbaldawa at gmail.com  Tue Feb 12 04:38:56 2013
From: dhruvbaldawa at gmail.com (Dhruv Baldawa)
Date: Tue, 12 Feb 2013 09:08:56 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
In-Reply-To: <CAFkt3UOu0YYcUiZS-aTPbfFQYrtQ0p9+5xyLQ8YHHM75iOANAw@mail.gmail.com>
References: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
	<CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
	<CAC5Hnjgga6bq1n63yR3AUx4mOLTTJJvz=9--2=roMJkWLNfB5A@mail.gmail.com>
	<CAFkt3UMVbC_TNauPFXPZzk+FgNtG_GSD0-FAg1jNrYxV9w7d4g@mail.gmail.com>
	<CAC5Hnjhx9QwB931EqnNvjG-Xw85eZd80ua7oV+LVYZDt2+E95w@mail.gmail.com>
	<CAFkt3UOu0YYcUiZS-aTPbfFQYrtQ0p9+5xyLQ8YHHM75iOANAw@mail.gmail.com>
Message-ID: <CAC5HnjgtgC=1gV+FQctQVsJYdjQUzTwMjfZK_scWebZC=sGJtA@mail.gmail.com>

--
Dhruv Baldawa
(http://www.dhruvb.com)


On Tue, Feb 12, 2013 at 7:13 AM, Sriram Karra <karra.etc at gmail.com> wrote:

> On Wed, Feb 6, 2013 at 12:05 PM, Dhruv Baldawa <dhruvbaldawa at gmail.com
> >wrote:
>
> > OK I misread. Let me see if I understood your problem correctly.
> >
> >    1. All the consultations will be stored in that table.
> >    2. When you have a Consultation object, you need a
> `consultation_count`
> >    property for the number of consultation for that day.
> >
> > So, this should work now, according to me:
> >
> > def generate_consultation_id(date):
> >      return Consultation.query.filter_by(data=data).count() + 1
> >
> >
> I assume you meant 'date=date' in the method body.
>

Yes, sorry for the typo.


>
>
> > class Consultation(Base):
> >     ...
> >     cid = Column(Integer, default=generate_consultation_id)
> >
> > This should work, according to me. The function is called while adding
> the
> > id to the database.
>
>
> Thanks a lot. It does appear to work. Just a clarification - I have two
> sessions initialized - one for a demo database and one for a production
> database and allow the users to switch between the two (for staff training,
> or feature exploration purposes). I tested it briefly and the counts are
> correctly incremented for whichever session is currently active. Just
> wanted to confirm that behaviour will be consistent.
>

Yes, this will be consistent. Just to explain in brief how it works. The
default function gets executed in runtime, when a new record is created, it
just go throughs the database, finds the number of records for that
particular date and increments it by one and returns it. As long as the
same procedure is followed, it would be consistent, but if someone
specifies the value explicitly, it might create a problem. Also, I have
found a bug which can be solved using context-based default
functions<http://docs.sqlalchemy.org/en/rel_0_7/core/schema.html#context-sensitive-default-functions>

def generate_consultation_id(context):
     return Consultation.query.filter_by(date=context.current_parameters['date']).count()
+ 1


> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>

From karra.etc at gmail.com  Tue Feb 12 07:05:16 2013
From: karra.etc at gmail.com (Sriram Karra)
Date: Tue, 12 Feb 2013 11:35:16 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
In-Reply-To: <CAC5HnjgtgC=1gV+FQctQVsJYdjQUzTwMjfZK_scWebZC=sGJtA@mail.gmail.com>
References: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
	<CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
	<CAC5Hnjgga6bq1n63yR3AUx4mOLTTJJvz=9--2=roMJkWLNfB5A@mail.gmail.com>
	<CAFkt3UMVbC_TNauPFXPZzk+FgNtG_GSD0-FAg1jNrYxV9w7d4g@mail.gmail.com>
	<CAC5Hnjhx9QwB931EqnNvjG-Xw85eZd80ua7oV+LVYZDt2+E95w@mail.gmail.com>
	<CAFkt3UOu0YYcUiZS-aTPbfFQYrtQ0p9+5xyLQ8YHHM75iOANAw@mail.gmail.com>
	<CAC5HnjgtgC=1gV+FQctQVsJYdjQUzTwMjfZK_scWebZC=sGJtA@mail.gmail.com>
Message-ID: <CAFkt3UN1DGQmnX3dfyPiqjQB6yuzYmhd+6asksyAW1Y1+E_55A@mail.gmail.com>

On Tue, Feb 12, 2013 at 9:08 AM, Dhruv Baldawa <dhruvbaldawa at gmail.com>wrote:

>
> Yes, this will be consistent. Just to explain in brief how it works. The
> default function gets executed in runtime, when a new record is created, it
> just go throughs the database, finds the number of records for that
> particular date and increments it by one and returns it. As long as the
> same procedure is followed, it would be consistent, but if someone
> specifies the value explicitly, it might create a problem. Also, I have
> found a bug which can be solved using context-based default
> functions<
> http://docs.sqlalchemy.org/en/rel_0_7/core/schema.html#context-sensitive-default-functions
> >
>
> def generate_consultation_id(context):
>      return
> Consultation.query.filter_by(date=context.current_parameters['date']).count() +
> 1


Hey, I think I spoke too early and in error. I was explicitly setting the
cid field and not hitting the default setter, and I mistakenly thought the
solution actually worked. I keep getting the error:

sqlalchemy.exc.StatementError: type object 'Consultation' has no attribute
'query' (original cause: AttributeError: type object 'Consultation' has no
attribute 'query') 'INSERT INTO consultation (patient_id, doctor_id,
dept_id, date, charge, notes, cid) VALUES (?, ?, ?, ?, ?, ?, ?)' [{'notes':
'Lorem Ipsum Gypsum zero sum', 'patient_id': 1, 'date': datetime.date(2013,
1, 16), 'charge': 30, 'dept_id': 7, 'doctor_id': None}]

query appears to be an attribute of a session class. Know what's going on?

From dhruvbaldawa at gmail.com  Tue Feb 12 07:08:21 2013
From: dhruvbaldawa at gmail.com (Dhruv Baldawa)
Date: Tue, 12 Feb 2013 11:38:21 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
In-Reply-To: <CAFkt3UN1DGQmnX3dfyPiqjQB6yuzYmhd+6asksyAW1Y1+E_55A@mail.gmail.com>
References: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
	<CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
	<CAC5Hnjgga6bq1n63yR3AUx4mOLTTJJvz=9--2=roMJkWLNfB5A@mail.gmail.com>
	<CAFkt3UMVbC_TNauPFXPZzk+FgNtG_GSD0-FAg1jNrYxV9w7d4g@mail.gmail.com>
	<CAC5Hnjhx9QwB931EqnNvjG-Xw85eZd80ua7oV+LVYZDt2+E95w@mail.gmail.com>
	<CAFkt3UOu0YYcUiZS-aTPbfFQYrtQ0p9+5xyLQ8YHHM75iOANAw@mail.gmail.com>
	<CAC5HnjgtgC=1gV+FQctQVsJYdjQUzTwMjfZK_scWebZC=sGJtA@mail.gmail.com>
	<CAFkt3UN1DGQmnX3dfyPiqjQB6yuzYmhd+6asksyAW1Y1+E_55A@mail.gmail.com>
Message-ID: <CAC5HnjjFedd+BCiUgBmEbEVPQfSSNetcJ7hkgrLuY0=vbWSvug@mail.gmail.com>

try session.query(Consultation).filter_by(), sorry I am actually used to
using the above specified syntax because I usually use Flask-SQLAlchemy.

--
Dhruv Baldawa
(http://www.dhruvb.com)


On Tue, Feb 12, 2013 at 11:35 AM, Sriram Karra <karra.etc at gmail.com> wrote:

> On Tue, Feb 12, 2013 at 9:08 AM, Dhruv Baldawa <dhruvbaldawa at gmail.com
> >wrote:
>
> >
> > Yes, this will be consistent. Just to explain in brief how it works. The
> > default function gets executed in runtime, when a new record is created,
> it
> > just go throughs the database, finds the number of records for that
> > particular date and increments it by one and returns it. As long as the
> > same procedure is followed, it would be consistent, but if someone
> > specifies the value explicitly, it might create a problem. Also, I have
> > found a bug which can be solved using context-based default
> > functions<
> >
> http://docs.sqlalchemy.org/en/rel_0_7/core/schema.html#context-sensitive-default-functions
> > >
> >
> > def generate_consultation_id(context):
> >      return
> >
> Consultation.query.filter_by(date=context.current_parameters['date']).count()
> +
> > 1
>
>
> Hey, I think I spoke too early and in error. I was explicitly setting the
> cid field and not hitting the default setter, and I mistakenly thought the
> solution actually worked. I keep getting the error:
>
> sqlalchemy.exc.StatementError: type object 'Consultation' has no attribute
> 'query' (original cause: AttributeError: type object 'Consultation' has no
> attribute 'query') 'INSERT INTO consultation (patient_id, doctor_id,
> dept_id, date, charge, notes, cid) VALUES (?, ?, ?, ?, ?, ?, ?)' [{'notes':
> 'Lorem Ipsum Gypsum zero sum', 'patient_id': 1, 'date': datetime.date(2013,
> 1, 16), 'charge': 30, 'dept_id': 7, 'doctor_id': None}]
>
> query appears to be an attribute of a session class. Know what's going on?
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>

From karra.etc at gmail.com  Tue Feb 12 07:35:23 2013
From: karra.etc at gmail.com (Sriram Karra)
Date: Tue, 12 Feb 2013 12:05:23 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
In-Reply-To: <CAC5HnjjFedd+BCiUgBmEbEVPQfSSNetcJ7hkgrLuY0=vbWSvug@mail.gmail.com>
References: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
	<CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
	<CAC5Hnjgga6bq1n63yR3AUx4mOLTTJJvz=9--2=roMJkWLNfB5A@mail.gmail.com>
	<CAFkt3UMVbC_TNauPFXPZzk+FgNtG_GSD0-FAg1jNrYxV9w7d4g@mail.gmail.com>
	<CAC5Hnjhx9QwB931EqnNvjG-Xw85eZd80ua7oV+LVYZDt2+E95w@mail.gmail.com>
	<CAFkt3UOu0YYcUiZS-aTPbfFQYrtQ0p9+5xyLQ8YHHM75iOANAw@mail.gmail.com>
	<CAC5HnjgtgC=1gV+FQctQVsJYdjQUzTwMjfZK_scWebZC=sGJtA@mail.gmail.com>
	<CAFkt3UN1DGQmnX3dfyPiqjQB6yuzYmhd+6asksyAW1Y1+E_55A@mail.gmail.com>
	<CAC5HnjjFedd+BCiUgBmEbEVPQfSSNetcJ7hkgrLuY0=vbWSvug@mail.gmail.com>
Message-ID: <CAFkt3UMZfyWZ0RxmXmUKcdEuvbkdtXrxK1h3T9NDf9ZN+i9kBw@mail.gmail.com>

On Tue, Feb 12, 2013 at 11:38 AM, Dhruv Baldawa <dhruvbaldawa at gmail.com>wrote:

> try session.query(Consultation).filter_by(), sorry I am actually used to
> using the above specified syntax because I usually use Flask-SQLAlchemy.


Oh, well. the session object is not available inside Consultation class.
And as I mentioned I have two session objects of which one is live at any
given time...

From dhruvbaldawa at gmail.com  Tue Feb 12 08:02:01 2013
From: dhruvbaldawa at gmail.com (Dhruv Baldawa)
Date: Tue, 12 Feb 2013 12:32:01 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
In-Reply-To: <CAFkt3UMZfyWZ0RxmXmUKcdEuvbkdtXrxK1h3T9NDf9ZN+i9kBw@mail.gmail.com>
References: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
	<CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
	<CAC5Hnjgga6bq1n63yR3AUx4mOLTTJJvz=9--2=roMJkWLNfB5A@mail.gmail.com>
	<CAFkt3UMVbC_TNauPFXPZzk+FgNtG_GSD0-FAg1jNrYxV9w7d4g@mail.gmail.com>
	<CAC5Hnjhx9QwB931EqnNvjG-Xw85eZd80ua7oV+LVYZDt2+E95w@mail.gmail.com>
	<CAFkt3UOu0YYcUiZS-aTPbfFQYrtQ0p9+5xyLQ8YHHM75iOANAw@mail.gmail.com>
	<CAC5HnjgtgC=1gV+FQctQVsJYdjQUzTwMjfZK_scWebZC=sGJtA@mail.gmail.com>
	<CAFkt3UN1DGQmnX3dfyPiqjQB6yuzYmhd+6asksyAW1Y1+E_55A@mail.gmail.com>
	<CAC5HnjjFedd+BCiUgBmEbEVPQfSSNetcJ7hkgrLuY0=vbWSvug@mail.gmail.com>
	<CAFkt3UMZfyWZ0RxmXmUKcdEuvbkdtXrxK1h3T9NDf9ZN+i9kBw@mail.gmail.com>
Message-ID: <CAC5Hnjh4wrvDbjWHNUYncWh09QB8Ni=rmmHHd5qYXmkjDMYQyA@mail.gmail.com>

Then I guess you are doing it the wrong way. You should only have a single
session object (unless working with multiple databases simultaneously). The
object should be binded with whatever connection is required.


if PRODUCTION:
    engine = create_engine(...)
else:
    engine = create_engine(...)

session = sessionmaker(bind=engine)

then import session from whichever module you have added the above code. I
don't know how you are doing the model-based queries, if you have someother
way of querying models you can follow that, the concept and method still
remains the same.

Configurations can be controlled by an optional command-line argument or
environment variable or a flag, its upto you. I run 4 different
configurations for my app using command-line arguments.

--
Dhruv Baldawa
(http://www.dhruvb.com)


On Tue, Feb 12, 2013 at 12:05 PM, Sriram Karra <karra.etc at gmail.com> wrote:

> On Tue, Feb 12, 2013 at 11:38 AM, Dhruv Baldawa <dhruvbaldawa at gmail.com
> >wrote:
>
> > try session.query(Consultation).filter_by(), sorry I am actually used to
> > using the above specified syntax because I usually use Flask-SQLAlchemy.
>
>
> Oh, well. the session object is not available inside Consultation class.
> And as I mentioned I have two session objects of which one is live at any
> given time...
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>

From karra.etc at gmail.com  Tue Feb 12 09:32:42 2013
From: karra.etc at gmail.com (Sriram Karra)
Date: Tue, 12 Feb 2013 14:02:42 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
In-Reply-To: <CAC5Hnjh4wrvDbjWHNUYncWh09QB8Ni=rmmHHd5qYXmkjDMYQyA@mail.gmail.com>
References: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
	<CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
	<CAC5Hnjgga6bq1n63yR3AUx4mOLTTJJvz=9--2=roMJkWLNfB5A@mail.gmail.com>
	<CAFkt3UMVbC_TNauPFXPZzk+FgNtG_GSD0-FAg1jNrYxV9w7d4g@mail.gmail.com>
	<CAC5Hnjhx9QwB931EqnNvjG-Xw85eZd80ua7oV+LVYZDt2+E95w@mail.gmail.com>
	<CAFkt3UOu0YYcUiZS-aTPbfFQYrtQ0p9+5xyLQ8YHHM75iOANAw@mail.gmail.com>
	<CAC5HnjgtgC=1gV+FQctQVsJYdjQUzTwMjfZK_scWebZC=sGJtA@mail.gmail.com>
	<CAFkt3UN1DGQmnX3dfyPiqjQB6yuzYmhd+6asksyAW1Y1+E_55A@mail.gmail.com>
	<CAC5HnjjFedd+BCiUgBmEbEVPQfSSNetcJ7hkgrLuY0=vbWSvug@mail.gmail.com>
	<CAFkt3UMZfyWZ0RxmXmUKcdEuvbkdtXrxK1h3T9NDf9ZN+i9kBw@mail.gmail.com>
	<CAC5Hnjh4wrvDbjWHNUYncWh09QB8Ni=rmmHHd5qYXmkjDMYQyA@mail.gmail.com>
Message-ID: <CAFkt3UOebw5LczfE8UHaJ+-dhjJHL0xwvfE_A2w5cgmbq2a1ew@mail.gmail.com>

On Tue, Feb 12, 2013 at 12:32 PM, Dhruv Baldawa <dhruvbaldawa at gmail.com>wrote:

> Then I guess you are doing it the wrong way. You should only have a single
> session object (unless working with multiple databases simultaneously). The
> object should be binded with whatever connection is required.



I do have two separate databases - a demo database for training purposes
and a live production database. Both have to be functional and available
simultaneously.

Anyway, thanks for your help. I was only trying to figure out some way of
achieving what I wanted without accessing the session object. I guess
that's not possible. Good to know that.

Cheers,
Karra

From saager.mhatre at gmail.com  Tue Feb 12 17:54:07 2013
From: saager.mhatre at gmail.com (Saager Mhatre)
Date: Tue, 12 Feb 2013 22:24:07 +0530
Subject: [BangPypers] Feb meetup
In-Reply-To: <CAO5c=mkJuRf1hKqCoy9bxBKDCPoKh3MqDsS7F9eUF-tUh2aDYA@mail.gmail.com>
References: <CAO5c=mkJuRf1hKqCoy9bxBKDCPoKh3MqDsS7F9eUF-tUh2aDYA@mail.gmail.com>
Message-ID: <CADfLaaD21HivWWT=RmSZvYQPq9_y6z_4p3q35uSJrGimocm5Dg@mail.gmail.com>

On Fri, Feb 8, 2013 at 4:54 PM, kracekumar ramaraju <
kracethekingmaker at gmail.com> wrote:

> All,
>
> Feb Meetup will be on 16th, as usual 3.00 PM, shall we have meetup in CIS


Just checking, is this confirmed?

- d

From kracethekingmaker at gmail.com  Tue Feb 12 18:04:24 2013
From: kracethekingmaker at gmail.com (kracekumar ramaraju)
Date: Tue, 12 Feb 2013 22:34:24 +0530
Subject: [BangPypers] Feb meetup
In-Reply-To: <CADfLaaD21HivWWT=RmSZvYQPq9_y6z_4p3q35uSJrGimocm5Dg@mail.gmail.com>
References: <CAO5c=mkJuRf1hKqCoy9bxBKDCPoKh3MqDsS7F9eUF-tUh2aDYA@mail.gmail.com>
	<CADfLaaD21HivWWT=RmSZvYQPq9_y6z_4p3q35uSJrGimocm5Dg@mail.gmail.com>
Message-ID: <CAO5c=m=iZ4w=5AfwT-PgHyMRozgxc4Zqj5+EUqYEeVre-K5iZA@mail.gmail.com>

On Tue, Feb 12, 2013 at 10:24 PM, Saager Mhatre <saager.mhatre at gmail.com>wrote:

> On Fri, Feb 8, 2013 at 4:54 PM, kracekumar ramaraju <
> kracethekingmaker at gmail.com> wrote:
>
> > All,
> >
> > Feb Meetup will be on 16th, as usual 3.00 PM, shall we have meetup in CIS
>
>
> Just checking, is this confirmed?
>
> Yes, people have gone ahead and made this as venue
http://www.meetup.com/BangPypers/events/102484032/. Hence confirmed.

> - d
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>



-- 
*
Thanks & Regards

"Talk is cheap, show me the code" -- Linus Torvalds
kracekumar
www.kracekumar.com
*

From noufal at nibrahim.net.in  Wed Feb 13 14:32:35 2013
From: noufal at nibrahim.net.in (Noufal Ibrahim)
Date: Wed, 13 Feb 2013 19:02:35 +0530
Subject: [BangPypers] [X-post] Pycon India meeting on IRC.
Message-ID: <878v6snxu4.fsf@sanitarium.localdomain>


Hello everyone,
        Sorry about the cross posting but this needs a wide audience. 

        Let's get the ball rolling for PyCon India with an IRC meeting
this Friday (15/Feb) at 1900 on IRC.

        The channel is #python-india on irc.freenode.net (not
#pythonindia).

Thanks


        



-- 
Cordially,
Noufal
http://nibrahim.net.in

From vnbang2003 at yahoo.com  Thu Feb 14 03:49:12 2013
From: vnbang2003 at yahoo.com (vijay)
Date: Thu, 14 Feb 2013 10:49:12 +0800 (SGT)
Subject: [BangPypers] [X-post] Pycon India meeting on IRC.
In-Reply-To: <878v6snxu4.fsf@sanitarium.localdomain>
References: <878v6snxu4.fsf@sanitarium.localdomain>
Message-ID: <1360810152.1220.YahooMailNeo@web192206.mail.sg3.yahoo.com>

+1


________________________________
 From: Noufal Ibrahim <noufal at nibrahim.net.in>
To: Python Pune <pythonpune at googlegroups.com>; Bangalore Python Users Group <bangpypers at python.org>; Mailing list for the PyCon India conference <inpycon at python.org>; chennaipy <chennaipy at googlegroups.com>; Kerala Python User Group <python-kerala at googlegroups.com> 
Sent: Wednesday, 13 February 2013 7:02 PM
Subject: [BangPypers] [X-post] Pycon India meeting on IRC.
 

Hello everyone,
? ? ? ? Sorry about the cross posting but this needs a wide audience. 

? ? ? ? Let's get the ball rolling for PyCon India with an IRC meeting
this Friday (15/Feb) at 1900 on IRC.

? ? ? ? The channel is #python-india on irc.freenode.net (not
#pythonindia).

Thanks


? ? ? ? 



-- 
Cordially,
Noufal
http://nibrahim.net.in
_______________________________________________
BangPypers mailing list
BangPypers at python.org
http://mail.python.org/mailman/listinfo/bangpypers

From deepakgarg.iitg at gmail.com  Thu Feb 14 18:15:37 2013
From: deepakgarg.iitg at gmail.com (Deepak Garg)
Date: Thu, 14 Feb 2013 09:15:37 -0800
Subject: [BangPypers] Feb meetup
In-Reply-To: <CAO5c=m=iZ4w=5AfwT-PgHyMRozgxc4Zqj5+EUqYEeVre-K5iZA@mail.gmail.com>
References: <CAO5c=mkJuRf1hKqCoy9bxBKDCPoKh3MqDsS7F9eUF-tUh2aDYA@mail.gmail.com>
	<CADfLaaD21HivWWT=RmSZvYQPq9_y6z_4p3q35uSJrGimocm5Dg@mail.gmail.com>
	<CAO5c=m=iZ4w=5AfwT-PgHyMRozgxc4Zqj5+EUqYEeVre-K5iZA@mail.gmail.com>
Message-ID: <CAByQ+9_7D9XuQOczM3VGZ6W2noE8Vi1m516rnv0Cfenp8NCewQ@mail.gmail.com>

I have updated Jonathan's Talk on the agenda
http://www.meetup.com/BangPypers/events/102484032/

Please let know if anyone would like to present as well.



Deepak


On Tue, Feb 12, 2013 at 9:04 AM, kracekumar ramaraju <
kracethekingmaker at gmail.com> wrote:

> On Tue, Feb 12, 2013 at 10:24 PM, Saager Mhatre <saager.mhatre at gmail.com
> >wrote:
>
> > On Fri, Feb 8, 2013 at 4:54 PM, kracekumar ramaraju <
> > kracethekingmaker at gmail.com> wrote:
> >
> > > All,
> > >
> > > Feb Meetup will be on 16th, as usual 3.00 PM, shall we have meetup in
> CIS
> >
> >
> > Just checking, is this confirmed?
> >
> > Yes, people have gone ahead and made this as venue
> http://www.meetup.com/BangPypers/events/102484032/. Hence confirmed.
>
> > - d
> > _______________________________________________
> > BangPypers mailing list
> > BangPypers at python.org
> > http://mail.python.org/mailman/listinfo/bangpypers
> >
>
>
>
> --
> *
> Thanks & Regards
>
> "Talk is cheap, show me the code" -- Linus Torvalds
> kracekumar
> www.kracekumar.com
> *
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>



-- 

Deepak Garg,

Software Engineer,
Amazon Development Center India,
Phone-no.:+917829866870

Github: https://github.com/gargdeepak
LinkedIn: http://in.linkedin.com/in/deepakgargiit
Slideshare:   http://www.slideshare.net/khinnu4u/presentations
Skype-id: deepakgarg.iit

From sriramnrn at gmail.com  Fri Feb 15 00:29:04 2013
From: sriramnrn at gmail.com (Sriram Narayanan)
Date: Fri, 15 Feb 2013 04:59:04 +0530
Subject: [BangPypers] Fwd: Python Software Foundation: Python Trademark at
	Risk
In-Reply-To: <CANBHLUh5LzzB3=fYjWMbFmGSEw452zjV=XFP0OExUxzEMfb0Mg@mail.gmail.com>
References: <CANBHLUh5LzzB3=fYjWMbFmGSEw452zjV=XFP0OExUxzEMfb0Mg@mail.gmail.com>
Message-ID: <CANiY96az9zZq3UNUXPsX0uWe0FongMD-VCdDE40Fhp0PqbxG6Q@mail.gmail.com>

Fyi
---------- Forwarded message ----------
From: "Dmitrijs Ledkovs" <xnox at debian.org>
Date: Feb 15, 2013 3:17 AM
Subject: Python Software Foundation: Python Trademark at Risk
To: <debian-devel at lists.debian.org>, <debian-python at lists.debian.org>, <
debian-legal at lists.debian.org>

Dear All,

Full article:
http://pyfound.blogspot.co.uk/2013/02/python-trademark-at-risk-in-europe-we.html

There is a company in the UK that is trying to trademark the use of
the term "Python" for all software, services, servers... pretty much
anything having to do with a computer. Specifically, it is the company
that got a hold on the python.co.uk domain 13 years ago.

According to our London counsel, some of the best pieces of evidence
we can submit to the European trademark office are official letters
from well-known companies "using PYTHON branded software in various
member states of the EU" so that we can "obtain independent witness
statements from them attesting to the trade origin significance of the
PYTHON mark in connection with the software and related
goods/services." We also need evidence of use throughout the EU.

Further instructions on how to submit letters of support are in the
blog article linked above.

Please help defend python trademark.

Regards,

Dmitrijs.


--
To UNSUBSCRIBE, email to debian-legal-REQUEST at lists.debian.org
with a subject of "unsubscribe". Trouble? Contact
listmaster at lists.debian.org
Archive:
http://lists.debian.org/CANBHLUh5LzzB3=fYjWMbFmGSEw452zjV=XFP0OExUxzEMfb0Mg at mail.gmail.com

From baiju.m.mail at gmail.com  Fri Feb 15 10:11:02 2013
From: baiju.m.mail at gmail.com (Baiju M)
Date: Fri, 15 Feb 2013 14:41:02 +0530
Subject: [BangPypers] Fwd: Python Software Foundation: Python Trademark
	at Risk
In-Reply-To: <CANiY96az9zZq3UNUXPsX0uWe0FongMD-VCdDE40Fhp0PqbxG6Q@mail.gmail.com>
References: <CANBHLUh5LzzB3=fYjWMbFmGSEw452zjV=XFP0OExUxzEMfb0Mg@mail.gmail.com>
	<CANiY96az9zZq3UNUXPsX0uWe0FongMD-VCdDE40Fhp0PqbxG6Q@mail.gmail.com>
Message-ID: <CAN8ZCbx+FYW4ZhyNxYgZ0SbzjCDjKsWL-kTUxmVA1ztBu2unLw@mail.gmail.com>

Few discussion links:
http://news.ycombinator.com/item?id=5221093
http://www.reddit.com/r/Python/comments/18j8dd/python_software_foundation_news_python_trademark/

On Fri, Feb 15, 2013 at 4:59 AM, Sriram Narayanan <sriramnrn at gmail.com> wrote:
> Fyi
> ---------- Forwarded message ----------
> From: "Dmitrijs Ledkovs" <xnox at debian.org>
> Date: Feb 15, 2013 3:17 AM
> Subject: Python Software Foundation: Python Trademark at Risk
> To: <debian-devel at lists.debian.org>, <debian-python at lists.debian.org>, <
> debian-legal at lists.debian.org>
>
> Dear All,
>
> Full article:
> http://pyfound.blogspot.co.uk/2013/02/python-trademark-at-risk-in-europe-we.html
>
> There is a company in the UK that is trying to trademark the use of
> the term "Python" for all software, services, servers... pretty much
> anything having to do with a computer. Specifically, it is the company
> that got a hold on the python.co.uk domain 13 years ago.
>
> According to our London counsel, some of the best pieces of evidence
> we can submit to the European trademark office are official letters
> from well-known companies "using PYTHON branded software in various
> member states of the EU" so that we can "obtain independent witness
> statements from them attesting to the trade origin significance of the
> PYTHON mark in connection with the software and related
> goods/services." We also need evidence of use throughout the EU.
>
> Further instructions on how to submit letters of support are in the
> blog article linked above.
>
> Please help defend python trademark.
>
> Regards,
>
> Dmitrijs.
>
>
> --
> To UNSUBSCRIBE, email to debian-legal-REQUEST at lists.debian.org
> with a subject of "unsubscribe". Trouble? Contact
> listmaster at lists.debian.org
> Archive:
> http://lists.debian.org/CANBHLUh5LzzB3=fYjWMbFmGSEw452zjV=XFP0OExUxzEMfb0Mg at mail.gmail.com
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers

From anandology at gmail.com  Fri Feb 15 10:40:35 2013
From: anandology at gmail.com (Anand Chitipothu)
Date: Fri, 15 Feb 2013 15:10:35 +0530
Subject: [BangPypers] Fwd: Python Software Foundation: Python Trademark
	at Risk
In-Reply-To: <CANiY96az9zZq3UNUXPsX0uWe0FongMD-VCdDE40Fhp0PqbxG6Q@mail.gmail.com>
References: <CANBHLUh5LzzB3=fYjWMbFmGSEw452zjV=XFP0OExUxzEMfb0Mg@mail.gmail.com>
	<CANiY96az9zZq3UNUXPsX0uWe0FongMD-VCdDE40Fhp0PqbxG6Q@mail.gmail.com>
Message-ID: <CAC7wXFyCUDNXkkFT1Ky+p1AoTDup5pO3DZk_qcyiy0LWierKCw@mail.gmail.com>

I'm glad that we blocked the python.org.in domain and started using
for Python community in India.

Anand

On Fri, Feb 15, 2013 at 4:59 AM, Sriram Narayanan <sriramnrn at gmail.com> wrote:
> Fyi
> ---------- Forwarded message ----------
> From: "Dmitrijs Ledkovs" <xnox at debian.org>
> Date: Feb 15, 2013 3:17 AM
> Subject: Python Software Foundation: Python Trademark at Risk
> To: <debian-devel at lists.debian.org>, <debian-python at lists.debian.org>, <
> debian-legal at lists.debian.org>
>
> Dear All,
>
> Full article:
> http://pyfound.blogspot.co.uk/2013/02/python-trademark-at-risk-in-europe-we.html
>
> There is a company in the UK that is trying to trademark the use of
> the term "Python" for all software, services, servers... pretty much
> anything having to do with a computer. Specifically, it is the company
> that got a hold on the python.co.uk domain 13 years ago.
>
> According to our London counsel, some of the best pieces of evidence
> we can submit to the European trademark office are official letters
> from well-known companies "using PYTHON branded software in various
> member states of the EU" so that we can "obtain independent witness
> statements from them attesting to the trade origin significance of the
> PYTHON mark in connection with the software and related
> goods/services." We also need evidence of use throughout the EU.
>
> Further instructions on how to submit letters of support are in the
> blog article linked above.
>
> Please help defend python trademark.
>
> Regards,
>
> Dmitrijs.
>
>
> --
> To UNSUBSCRIBE, email to debian-legal-REQUEST at lists.debian.org
> with a subject of "unsubscribe". Trouble? Contact
> listmaster at lists.debian.org
> Archive:
> http://lists.debian.org/CANBHLUh5LzzB3=fYjWMbFmGSEw452zjV=XFP0OExUxzEMfb0Mg at mail.gmail.com
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers



--
Anand
http://anandology.com/

From chinny143charan at gmail.com  Fri Feb 15 16:19:34 2013
From: chinny143charan at gmail.com (charantej.S)
Date: Fri, 15 Feb 2013 20:49:34 +0530
Subject: [BangPypers] [JOBS] Python Django expert
In-Reply-To: <CALFWOz5=Rz4COFK_dOc=3FL_iDnkSPg=vN4f3s__kOr_5ZuF-Q@mail.gmail.com>
References: <CALFWOz5=Rz4COFK_dOc=3FL_iDnkSPg=vN4f3s__kOr_5ZuF-Q@mail.gmail.com>
Message-ID: <CAGSY0H9_MUtYcLLaWs96pe83pZaZo+3S2Rf0_rob1xpeSRVjJg@mail.gmail.com>

Hi Hrishikesh Kulkarni,

                                I'm charantej s having 4+ years of
experience in python /Django. I'm interested  in this project.

My contact no 7845278933.




On Mon, Jan 21, 2013 at 10:43 AM, Hrishikesh Kulkarni
<rishi at turtleyogi.com>wrote:

> I am looking for an expert on Python based Django web framework on
> contract basis. If interested please contact me at
> rishi at turtleyogi.com
>
> regards,
> Rishi
> Founder - Turtleyogi
> (Incubated at IIM-B)
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>



-- 
Thanks & Regards,
CharanTej.S

From kracethekingmaker at gmail.com  Sat Feb 16 21:04:39 2013
From: kracethekingmaker at gmail.com (kracekumar ramaraju)
Date: Sun, 17 Feb 2013 01:34:39 +0530
Subject: [BangPypers] Feb meetup
In-Reply-To: <CAByQ+9_7D9XuQOczM3VGZ6W2noE8Vi1m516rnv0Cfenp8NCewQ@mail.gmail.com>
References: <CAO5c=mkJuRf1hKqCoy9bxBKDCPoKh3MqDsS7F9eUF-tUh2aDYA@mail.gmail.com>
	<CADfLaaD21HivWWT=RmSZvYQPq9_y6z_4p3q35uSJrGimocm5Dg@mail.gmail.com>
	<CAO5c=m=iZ4w=5AfwT-PgHyMRozgxc4Zqj5+EUqYEeVre-K5iZA@mail.gmail.com>
	<CAByQ+9_7D9XuQOczM3VGZ6W2noE8Vi1m516rnv0Cfenp8NCewQ@mail.gmail.com>
Message-ID: <CAO5c=m=pVdL9nE54VDxpPi-yKKc9k_4jZF=niebN2pZY5tMhqA@mail.gmail.com>

Turn out for the meetup was fantastic. 25 people attended out which 17 were
first time participants.


There were 2 talks one by Jonathan and other by Lavakumar. 2 lighting
talks.

On Thu, Feb 14, 2013 at 10:45 PM, Deepak Garg <deepakgarg.iitg at gmail.com>wrote:

> I have updated Jonathan's Talk on the agenda
> http://www.meetup.com/BangPypers/events/102484032/
>
> Please let know if anyone would like to present as well.
>
>
>
> Deepak
>
>
> On Tue, Feb 12, 2013 at 9:04 AM, kracekumar ramaraju <
> kracethekingmaker at gmail.com> wrote:
>
> > On Tue, Feb 12, 2013 at 10:24 PM, Saager Mhatre <saager.mhatre at gmail.com
> > >wrote:
> >
> > > On Fri, Feb 8, 2013 at 4:54 PM, kracekumar ramaraju <
> > > kracethekingmaker at gmail.com> wrote:
> > >
> > > > All,
> > > >
> > > > Feb Meetup will be on 16th, as usual 3.00 PM, shall we have meetup in
> > CIS
> > >
> > >
> > > Just checking, is this confirmed?
> > >
> > > Yes, people have gone ahead and made this as venue
> > http://www.meetup.com/BangPypers/events/102484032/. Hence confirmed.
> >
> > > - d
> > > _______________________________________________
> > > BangPypers mailing list
> > > BangPypers at python.org
> > > http://mail.python.org/mailman/listinfo/bangpypers
> > >
> >
> >
> >
> > --
> > *
> > Thanks & Regards
> >
> > "Talk is cheap, show me the code" -- Linus Torvalds
> > kracekumar
> > www.kracekumar.com
> > *
> > _______________________________________________
> > BangPypers mailing list
> > BangPypers at python.org
> > http://mail.python.org/mailman/listinfo/bangpypers
> >
>
>
>
> --
>
> Deepak Garg,
>
> Software Engineer,
> Amazon Development Center India,
> Phone-no.:+917829866870
>
> Github: https://github.com/gargdeepak
> LinkedIn: http://in.linkedin.com/in/deepakgargiit
> Slideshare:   http://www.slideshare.net/khinnu4u/presentations
> Skype-id: deepakgarg.iit
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>



-- 
*
Thanks & Regards

"Talk is cheap, show me the code" -- Linus Torvalds
kracekumar
www.kracekumar.com
*

From jace at pobox.com  Mon Feb 18 09:59:47 2013
From: jace at pobox.com (Kiran Jonnalagadda)
Date: Mon, 18 Feb 2013 14:29:47 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
 column
In-Reply-To: <CAFkt3UOebw5LczfE8UHaJ+-dhjJHL0xwvfE_A2w5cgmbq2a1ew@mail.gmail.com>
References: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
	<CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
	<CAC5Hnjgga6bq1n63yR3AUx4mOLTTJJvz=9--2=roMJkWLNfB5A@mail.gmail.com>
	<CAFkt3UMVbC_TNauPFXPZzk+FgNtG_GSD0-FAg1jNrYxV9w7d4g@mail.gmail.com>
	<CAC5Hnjhx9QwB931EqnNvjG-Xw85eZd80ua7oV+LVYZDt2+E95w@mail.gmail.com>
	<CAFkt3UOu0YYcUiZS-aTPbfFQYrtQ0p9+5xyLQ8YHHM75iOANAw@mail.gmail.com>
	<CAC5HnjgtgC=1gV+FQctQVsJYdjQUzTwMjfZK_scWebZC=sGJtA@mail.gmail.com>
	<CAFkt3UN1DGQmnX3dfyPiqjQB6yuzYmhd+6asksyAW1Y1+E_55A@mail.gmail.com>
	<CAC5HnjjFedd+BCiUgBmEbEVPQfSSNetcJ7hkgrLuY0=vbWSvug@mail.gmail.com>
	<CAFkt3UMZfyWZ0RxmXmUKcdEuvbkdtXrxK1h3T9NDf9ZN+i9kBw@mail.gmail.com>
	<CAC5Hnjh4wrvDbjWHNUYncWh09QB8Ni=rmmHHd5qYXmkjDMYQyA@mail.gmail.com>
	<CAFkt3UOebw5LczfE8UHaJ+-dhjJHL0xwvfE_A2w5cgmbq2a1ew@mail.gmail.com>
Message-ID: <A443E3E2B37F48A69ADC32D5D08B53CD@gmail.com>

Sriram, I just noticed this thread. What you are seeking is fairly trivial once you figure out SQLAlchemy a little better.

Here is how I implemented container-unique incrementing ids:

https://github.com/hasgeek/coaster/blob/master/coaster/sqlalchemy.py#L197

The trick is to override __init__ and set the value of the column to an SQL expression that is evaluated database-side on commit. In my case, I'm checking for the max value from existing instances that share the same parent. In your case, it'll be instances that share the same date.

Kiran 

-- 
Kiran Jonnalagadda
http://jace.zaiki.in/
http://hasgeek.com/


On Tuesday, 12 February 2013 at 2:02 PM, Sriram Karra wrote:

> On Tue, Feb 12, 2013 at 12:32 PM, Dhruv Baldawa <dhruvbaldawa at gmail.com (mailto:dhruvbaldawa at gmail.com)>wrote:
> 
> > Then I guess you are doing it the wrong way. You should only have a single
> > session object (unless working with multiple databases simultaneously). The
> > object should be binded with whatever connection is required.
> > 
> 
> 
> 
> 
> I do have two separate databases - a demo database for training purposes
> and a live production database. Both have to be functional and available
> simultaneously.
> 
> Anyway, thanks for your help. I was only trying to figure out some way of
> achieving what I wanted without accessing the session object. I guess
> that's not possible. Good to know that.
> 
> Cheers,
> Karra
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org (mailto:BangPypers at python.org)
> http://mail.python.org/mailman/listinfo/bangpypers
> 
> 



From jaganadhg at gmail.com  Mon Feb 18 16:00:11 2013
From: jaganadhg at gmail.com (JAGANADH G)
Date: Mon, 18 Feb 2013 20:30:11 +0530
Subject: [BangPypers] Django Jquey List View issu
Message-ID: <CAM4qvdEsY7MjP+8v2HxY0+9rHJ-_xgauXtonMMmsHGeNkpV=KA@mail.gmail.com>

Hi ,
I am working with a private Django project. In the project once the user
clicks on "Go" button he has to be redirected to a page with JQury list
view (Looks like a tabbed page).

To get redirected to "TabbedPage.html" I am using
render_to_response("TabbedPage.html",{'user':username'}.
When the page is redirected it is not at all showing the JQuery lists.

For each list page I have a Class bases generic view defined and mentioned
in the urls.py too.

Is there any way to get it rendered properly .

I am not that much familier with Django too :-(

-- 
**********************************
JAGANADH G
http://jaganadhg.in
*ILUGCBE*
http://ilugcbe.org.in

From abhat38 at gmail.com  Mon Feb 18 17:56:29 2013
From: abhat38 at gmail.com (anirudh bhat)
Date: Mon, 18 Feb 2013 22:26:29 +0530
Subject: [BangPypers] Django Jquey List View issu
In-Reply-To: <CAM4qvdEsY7MjP+8v2HxY0+9rHJ-_xgauXtonMMmsHGeNkpV=KA@mail.gmail.com>
References: <CAM4qvdEsY7MjP+8v2HxY0+9rHJ-_xgauXtonMMmsHGeNkpV=KA@mail.gmail.com>
Message-ID: <CAHKD0sH7U_qpXmC3axg=LJo7DPMXUOXUXCOjnH5Cui9Fs7hFAQ@mail.gmail.com>

Hello Jaganadh, your question is too abstract.Maybe you can show us some
code u have written if you dont mind.There maybe lot of things that can go
wrong here....one such example  is that maybe there is some problem with
your Jquery code.Is page redirecting done right?? what does your django
error log says??


On Mon, Feb 18, 2013 at 8:30 PM, JAGANADH G <jaganadhg at gmail.com> wrote:

> Hi ,
> I am working with a private Django project. In the project once the user
> clicks on "Go" button he has to be redirected to a page with JQury list
> view (Looks like a tabbed page).
>
> To get redirected to "TabbedPage.html" I am using
> render_to_response("TabbedPage.html",{'user':username'}.
> When the page is redirected it is not at all showing the JQuery lists.
>
> For each list page I have a Class bases generic view defined and mentioned
> in the urls.py too.
>
> Is there any way to get it rendered properly .
>
> I am not that much familier with Django too :-(
>
> --
> **********************************
> JAGANADH G
> http://jaganadhg.in
> *ILUGCBE*
> http://ilugcbe.org.in
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>

From jaganadhg at gmail.com  Tue Feb 19 03:20:12 2013
From: jaganadhg at gmail.com (JAGANADH G)
Date: Tue, 19 Feb 2013 07:50:12 +0530
Subject: [BangPypers] Django Jquey List View issu
In-Reply-To: <CAHKD0sH7U_qpXmC3axg=LJo7DPMXUOXUXCOjnH5Cui9Fs7hFAQ@mail.gmail.com>
References: <CAM4qvdEsY7MjP+8v2HxY0+9rHJ-_xgauXtonMMmsHGeNkpV=KA@mail.gmail.com>
	<CAHKD0sH7U_qpXmC3axg=LJo7DPMXUOXUXCOjnH5Cui9Fs7hFAQ@mail.gmail.com>
Message-ID: <CAM4qvdELJreEYvhv2R8o3S=ht13RF1yWAt2RuhEdDg+58S=0TQ@mail.gmail.com>

On Mon, Feb 18, 2013 at 10:26 PM, anirudh bhat <abhat38 at gmail.com> wrote:

> Hello Jaganadh, your question is too abstract.Maybe you can show us some
> code u have written if you dont mind.There maybe lot of things that can go
> wrong here....one such example  is that maybe there is some problem with
> your Jquery code.Is page redirecting done right?? what does your django
> error log says??
>
>
>
Hi,
There is no error shown in Django log . The page is getting redirected too.
I will post some code too

Best regards

-- 
**********************************
JAGANADH G
http://jaganadhg.in
*ILUGCBE*
http://ilugcbe.org.in

From jaganadhg at gmail.com  Tue Feb 19 08:00:30 2013
From: jaganadhg at gmail.com (JAGANADH G)
Date: Tue, 19 Feb 2013 12:30:30 +0530
Subject: [BangPypers] Django Jquey List View issu
In-Reply-To: <CAHKD0sH7U_qpXmC3axg=LJo7DPMXUOXUXCOjnH5Cui9Fs7hFAQ@mail.gmail.com>
References: <CAM4qvdEsY7MjP+8v2HxY0+9rHJ-_xgauXtonMMmsHGeNkpV=KA@mail.gmail.com>
	<CAHKD0sH7U_qpXmC3axg=LJo7DPMXUOXUXCOjnH5Cui9Fs7hFAQ@mail.gmail.com>
Message-ID: <CAM4qvdEFOzFdaDcGg3pyVRWHWjsQ7F=3aY+JMWp6-LfHsoVYCA@mail.gmail.com>

On Mon, Feb 18, 2013 at 10:26 PM, anirudh bhat <abhat38 at gmail.com> wrote:

> Hello Jaganadh, your question is too abstract.Maybe you can show us some
> code u have written if you dont mind.There maybe lot of things that can go
> wrong here....one such example  is that maybe there is some problem with
> your Jquery code.Is page redirecting done right?? what does your django
> error log says??
>
>
>

Hi
This is the code which redirects the page

def user_login(request):
        cache.clear()
        request.session.flush()
        """
        Logging the user to the system
        """
        state = "Login  using your credentials"
        username,password = "",""
        if request.POST:
                username = request.POST.get('username')
                password = request.POST.get('password')

                user = authenticate(username= username,password=password)
                request.COOKIES['username'] = username
                if user is not None and user.is_authenticated():
                        if user.is_active:
                                login(request,user)
                                state = "Your login was successful !"
                                cookie_name = request.COOKIES['username']
                                #return
redirect('/index/',{'username':username},RequestContext(request,{'username':username}))
                                #return
HttpResponseRedirect('/index/',{'username':cookie_name})
                                #return
redirect('/index/',{'username':cookie_name})
                                #return
render_to_response('Index.html',{'username':cookie_name})
                                #return
redirect('/index/',{'username':cookie_name})
                                return
render_to_response('Index.html',{'username':cookie_name})
                else:
                        state = "Your credentials are incorrect !"
        return
render_to_response("Login.html",{'state':state,'username':username})


-- 
**********************************
JAGANADH G
http://jaganadhg.in
*ILUGCBE*
http://ilugcbe.org.in

From ragsagar at gmail.com  Tue Feb 19 08:10:35 2013
From: ragsagar at gmail.com (ragsagar)
Date: Tue, 19 Feb 2013 12:40:35 +0530
Subject: [BangPypers] Django Jquey List View issu
In-Reply-To: <CAM4qvdEFOzFdaDcGg3pyVRWHWjsQ7F=3aY+JMWp6-LfHsoVYCA@mail.gmail.com>
References: <CAM4qvdEsY7MjP+8v2HxY0+9rHJ-_xgauXtonMMmsHGeNkpV=KA@mail.gmail.com>
	<CAHKD0sH7U_qpXmC3axg=LJo7DPMXUOXUXCOjnH5Cui9Fs7hFAQ@mail.gmail.com>
	<CAM4qvdEFOzFdaDcGg3pyVRWHWjsQ7F=3aY+JMWp6-LfHsoVYCA@mail.gmail.com>
Message-ID: <CACEP=sa7TdxMUvyGCz7a6DTutpVovOu40TbOgMuMvHib7cEsbw@mail.gmail.com>

It would have better if you have shared the code using dpase or some
pastebin, because it not that readable here. I am assuming your problem is
this. After login, the index.html page is rendering but you cannot the see
the list of items. If this is the problem do the following.
1) Get the url name of the url which is mapped to the view which renders
index.html.
2) if 'render_index_page' is the url name, do the following.

if user is not None and user.is_active:
    login(request, user)
    return HttpResponseRedirect(reverse('render_index_page'))
else:
    # Not logged

Then you don't have to set username in cookie or pass it to template like
that. You can access username like this without passing anything in
template if user is logged in.
{{ user.username }}



Thanks,
Rag


On Tue, Feb 19, 2013 at 12:30 PM, JAGANADH G <jaganadhg at gmail.com> wrote:

> On Mon, Feb 18, 2013 at 10:26 PM, anirudh bhat <abhat38 at gmail.com> wrote:
>
> > Hello Jaganadh, your question is too abstract.Maybe you can show us some
> > code u have written if you dont mind.There maybe lot of things that can
> go
> > wrong here....one such example  is that maybe there is some problem with
> > your Jquery code.Is page redirecting done right?? what does your django
> > error log says??
> >
> >
> >
>
> Hi
> This is the code which redirects the page
>
> def user_login(request):
>         cache.clear()
>         request.session.flush()
>         """
>         Logging the user to the system
>         """
>         state = "Login  using your credentials"
>         username,password = "",""
>         if request.POST:
>                 username = request.POST.get('username')
>                 password = request.POST.get('password')
>
>                 user = authenticate(username= username,password=password)
>                 request.COOKIES['username'] = username
>                 if user is not None and user.is_authenticated():
>                         if user.is_active:
>                                 login(request,user)
>                                 state = "Your login was successful !"
>                                 cookie_name = request.COOKIES['username']
>                                 #return
>
> redirect('/index/',{'username':username},RequestContext(request,{'username':username}))
>                                 #return
> HttpResponseRedirect('/index/',{'username':cookie_name})
>                                 #return
> redirect('/index/',{'username':cookie_name})
>                                 #return
> render_to_response('Index.html',{'username':cookie_name})
>                                 #return
> redirect('/index/',{'username':cookie_name})
>                                 return
> render_to_response('Index.html',{'username':cookie_name})
>                 else:
>                         state = "Your credentials are incorrect !"
>         return
> render_to_response("Login.html",{'state':state,'username':username})
>
>
> --
> **********************************
> JAGANADH G
> http://jaganadhg.in
> *ILUGCBE*
> http://ilugcbe.org.in
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>



-- 
blog : ragsagar.wordpress.com
mail id : python -c "print '@'.join(['ragsagar','.'.join([x for x in
['gmail','com']])])"

From jaganadhg at gmail.com  Tue Feb 19 09:21:27 2013
From: jaganadhg at gmail.com (JAGANADH G)
Date: Tue, 19 Feb 2013 13:51:27 +0530
Subject: [BangPypers] Django Jquey List View issu
In-Reply-To: <CACEP=sa7TdxMUvyGCz7a6DTutpVovOu40TbOgMuMvHib7cEsbw@mail.gmail.com>
References: <CAM4qvdEsY7MjP+8v2HxY0+9rHJ-_xgauXtonMMmsHGeNkpV=KA@mail.gmail.com>
	<CAHKD0sH7U_qpXmC3axg=LJo7DPMXUOXUXCOjnH5Cui9Fs7hFAQ@mail.gmail.com>
	<CAM4qvdEFOzFdaDcGg3pyVRWHWjsQ7F=3aY+JMWp6-LfHsoVYCA@mail.gmail.com>
	<CACEP=sa7TdxMUvyGCz7a6DTutpVovOu40TbOgMuMvHib7cEsbw@mail.gmail.com>
Message-ID: <CAM4qvdEj=ZqSGy+hu4npDB4KnhR5OjhWzH9goYwNs4o4QM=tTQ@mail.gmail.com>

On Tue, Feb 19, 2013 at 12:40 PM, ragsagar <ragsagar at gmail.com> wrote:

> It would have better if you have shared the code using dpase or some
> pastebin, because it not that readable here. I am assuming your problem is
> this. After login, the index.html page is rendering but you cannot the see
> the list of items. If this is the problem do the following.
> 1) Get the url name of the url which is mapped to the view which renders
> index.html.
> 2) if 'render_index_page' is the url name, do the following.
>
> if user is not None and user.is_active:
>     login(request, user)
>     return HttpResponseRedirect(reverse('render_index_page'))
> else:
>     # Not logged
>
> Then you don't have to set username in cookie or pass it to template like
> that. You can access username like this without passing anything in
> template if user is logged in.
> {{ user.username }}
>
>
> Hi

Here is the code in dpaste

http://dpaste.com/947018/
Error Reverse for 'Index.html' with arguments '()' and keyword arguments
'{}' not found

-- 
**********************************
JAGANADH G
http://jaganadhg.in
*ILUGCBE*
http://ilugcbe.org.in

From ragsagar at gmail.com  Tue Feb 19 09:42:29 2013
From: ragsagar at gmail.com (ragsagar)
Date: Tue, 19 Feb 2013 14:12:29 +0530
Subject: [BangPypers] Django Jquey List View issu
In-Reply-To: <CAM4qvdEj=ZqSGy+hu4npDB4KnhR5OjhWzH9goYwNs4o4QM=tTQ@mail.gmail.com>
References: <CAM4qvdEsY7MjP+8v2HxY0+9rHJ-_xgauXtonMMmsHGeNkpV=KA@mail.gmail.com>
	<CAHKD0sH7U_qpXmC3axg=LJo7DPMXUOXUXCOjnH5Cui9Fs7hFAQ@mail.gmail.com>
	<CAM4qvdEFOzFdaDcGg3pyVRWHWjsQ7F=3aY+JMWp6-LfHsoVYCA@mail.gmail.com>
	<CACEP=sa7TdxMUvyGCz7a6DTutpVovOu40TbOgMuMvHib7cEsbw@mail.gmail.com>
	<CAM4qvdEj=ZqSGy+hu4npDB4KnhR5OjhWzH9goYwNs4o4QM=tTQ@mail.gmail.com>
Message-ID: <CACEP=sbaYjDEhRyakEdPyg0sLwmF8ggwMzUSJVRuSfxJDoj4Nw@mail.gmail.com>

Refer the following link for the usage of reverse(). You need pass the url
name, not template name.

https://docs.djangoproject.com/en/dev/topics/http/urls/#reverse-resolution-of-urls


On Tue, Feb 19, 2013 at 1:51 PM, JAGANADH G <jaganadhg at gmail.com> wrote:

> On Tue, Feb 19, 2013 at 12:40 PM, ragsagar <ragsagar at gmail.com> wrote:
>
> > It would have better if you have shared the code using dpase or some
> > pastebin, because it not that readable here. I am assuming your problem
> is
> > this. After login, the index.html page is rendering but you cannot the
> see
> > the list of items. If this is the problem do the following.
> > 1) Get the url name of the url which is mapped to the view which renders
> > index.html.
> > 2) if 'render_index_page' is the url name, do the following.
> >
> > if user is not None and user.is_active:
> >     login(request, user)
> >     return HttpResponseRedirect(reverse('render_index_page'))
> > else:
> >     # Not logged
> >
> > Then you don't have to set username in cookie or pass it to template like
> > that. You can access username like this without passing anything in
> > template if user is logged in.
> > {{ user.username }}
> >
> >
> > Hi
>
> Here is the code in dpaste
>
> http://dpaste.com/947018/
> Error Reverse for 'Index.html' with arguments '()' and keyword arguments
> '{}' not found
>
> --
> **********************************
> JAGANADH G
> http://jaganadhg.in
> *ILUGCBE*
> http://ilugcbe.org.in
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>



-- 
blog : ragsagar.wordpress.com
mail id : python -c "print '@'.join(['ragsagar','.'.join([x for x in
['gmail','com']])])"

From karra.etc at gmail.com  Wed Feb 20 08:15:52 2013
From: karra.etc at gmail.com (Sriram Karra)
Date: Wed, 20 Feb 2013 12:45:52 +0530
Subject: [BangPypers] SQLAlchemy and 'non-trivial' default values for a
	column
In-Reply-To: <A443E3E2B37F48A69ADC32D5D08B53CD@gmail.com>
References: <CAFkt3UNFaEK+0Tjh=JiFU3S9Nc8zJZMW7YYU6Vuzexf1V9P3sA@mail.gmail.com>
	<CAPaifDfRvT5Uk4Fydw-XjN39Xx3pf7bjfCF1Fc-ZwdpTd3Q8xw@mail.gmail.com>
	<CAC5Hnjgga6bq1n63yR3AUx4mOLTTJJvz=9--2=roMJkWLNfB5A@mail.gmail.com>
	<CAFkt3UMVbC_TNauPFXPZzk+FgNtG_GSD0-FAg1jNrYxV9w7d4g@mail.gmail.com>
	<CAC5Hnjhx9QwB931EqnNvjG-Xw85eZd80ua7oV+LVYZDt2+E95w@mail.gmail.com>
	<CAFkt3UOu0YYcUiZS-aTPbfFQYrtQ0p9+5xyLQ8YHHM75iOANAw@mail.gmail.com>
	<CAC5HnjgtgC=1gV+FQctQVsJYdjQUzTwMjfZK_scWebZC=sGJtA@mail.gmail.com>
	<CAFkt3UN1DGQmnX3dfyPiqjQB6yuzYmhd+6asksyAW1Y1+E_55A@mail.gmail.com>
	<CAC5HnjjFedd+BCiUgBmEbEVPQfSSNetcJ7hkgrLuY0=vbWSvug@mail.gmail.com>
	<CAFkt3UMZfyWZ0RxmXmUKcdEuvbkdtXrxK1h3T9NDf9ZN+i9kBw@mail.gmail.com>
	<CAC5Hnjh4wrvDbjWHNUYncWh09QB8Ni=rmmHHd5qYXmkjDMYQyA@mail.gmail.com>
	<CAFkt3UOebw5LczfE8UHaJ+-dhjJHL0xwvfE_A2w5cgmbq2a1ew@mail.gmail.com>
	<A443E3E2B37F48A69ADC32D5D08B53CD@gmail.com>
Message-ID: <CAFkt3UPV1r7V4cYZG9zisd4fCRsNzmWRfWqN1Rb5O7ToJvPbxw@mail.gmail.com>

On Mon, Feb 18, 2013 at 2:29 PM, Kiran Jonnalagadda <jace at pobox.com> wrote:

>
> The trick is to override __init__ and set the value of the column to an
> SQL expression that is evaluated database-side on commit. In my case, I'm
> checking for the max value from existing instances that share the same
> parent. In your case, it'll be instances that share the same date.
>

I try to keep my code free of any SQL expressions - in equal measure out a
real lack of understanding SQL subtleties and to keep the code 'pure'
ORM-ish. But this is definitely interesting and something I could try next
time I need it.

From satishsagar83 at gmail.com  Wed Feb 20 08:24:24 2013
From: satishsagar83 at gmail.com (L Radhakrishna Rao)
Date: Wed, 20 Feb 2013 12:54:24 +0530
Subject: [BangPypers] Python related jobs for me
Message-ID: <CAAZd-jSUanxP3zxirePMki-H0yvnM_wv40vocBKJePu3gC4g2g@mail.gmail.com>

Hi guys and girls,

I am software engineer and also an enthusiastic programmer.

I have learned python on my own, though not knowledgeable as you people
are. I have learned python purely out of my interest.

Now i would like to get involved in some serious python development
activities. Any suggestions?

The problem with HRs is that they will usually treat me as a freshers,
especially in india.

Your advice will definitely change my careers and also, I will get to do
the thing which I love.

Thanks and Regards,

Radhakrishna

From gora at mimirtech.com  Wed Feb 20 08:31:25 2013
From: gora at mimirtech.com (Gora Mohanty)
Date: Wed, 20 Feb 2013 13:01:25 +0530
Subject: [BangPypers] Python related jobs for me
In-Reply-To: <CAAZd-jSUanxP3zxirePMki-H0yvnM_wv40vocBKJePu3gC4g2g@mail.gmail.com>
References: <CAAZd-jSUanxP3zxirePMki-H0yvnM_wv40vocBKJePu3gC4g2g@mail.gmail.com>
Message-ID: <CACiMRGKNLpSFm7HPgrN2MZvW0=b-zP8Xqb3jDAhSU+Pi_nnJrQ@mail.gmail.com>

On 20 February 2013 12:54, L Radhakrishna Rao <satishsagar83 at gmail.com> wrote:
> Hi guys and girls,
>
> I am software engineer and also an enthusiastic programmer.
>
> I have learned python on my own, though not knowledgeable as you people
> are. I have learned python purely out of my interest.
>
> Now i would like to get involved in some serious python development
> activities. Any suggestions?
[...]

This is a little off-topic, but nevertheless:
* Learning something on a candidate's own initiative would
  be a big plus in our book when it comes to a hiring decision.
* You should decide on a more specific area that you want to
   work in. One possibility is web development with Django,
   and Python, but you should pick an area that interests you.
* If your experience in that area is not very extensive, consider
  finding a company/organisation that works in the area, and
  do an internship with them.
* Another good way of gaining expertise, and getting noticed,
  is to find an open-source project in that area of work, and
  contributing to it.

Regards,
Gora

From kracethekingmaker at gmail.com  Wed Feb 20 08:33:01 2013
From: kracethekingmaker at gmail.com (kracekumar ramaraju)
Date: Wed, 20 Feb 2013 13:03:01 +0530
Subject: [BangPypers] Python related jobs for me
In-Reply-To: <CAAZd-jSUanxP3zxirePMki-H0yvnM_wv40vocBKJePu3gC4g2g@mail.gmail.com>
References: <CAAZd-jSUanxP3zxirePMki-H0yvnM_wv40vocBKJePu3gC4g2g@mail.gmail.com>
Message-ID: <CAO5c=m=zV-bC-Kvs3PJjr+OxKgoF9ueWAsBbpZFdwZ+LUj0EXw@mail.gmail.com>

On Wed, Feb 20, 2013 at 12:54 PM, L Radhakrishna Rao <
satishsagar83 at gmail.com> wrote:

> Hi guys and girls,
>
> I am software engineer and also an enthusiastic programmer.
>
> I have learned python on my own, though not knowledgeable as you people
> are. I have learned python purely out of my interest.
>
> Now i would like to get involved in some serious python development
> activities. Any suggestions?
>
> The problem with HRs is that they will usually treat me as a freshers,
> especially in india.
>
> Your advice will definitely change my careers and also, I will get to do
> the thing which I love.
>
>
There are lot of python projects in github in case you want to contribute,
the best way is to create an desktop app or webapp or python module or
python package. Ask suggestions from Friends and other programmers for your
code.

Kindly find your own interest(Music or cricket app or wget in python) since
path I followed may or maynot work out for you.

To have look of programmers in Bangalore, you can try
https://github.com/search?q=bangalore&ref=commandbar&type=Users , same
logic can be extended for python projects.


> Thanks and Regards,
>
> Radhakrishna
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>



-- 
*
Thanks & Regards

"Talk is cheap, show me the code" -- Linus Torvalds
kracekumar
www.kracekumar.com
*

From satishsagar83 at gmail.com  Wed Feb 20 08:37:44 2013
From: satishsagar83 at gmail.com (L Radhakrishna Rao)
Date: Wed, 20 Feb 2013 13:07:44 +0530
Subject: [BangPypers] Python related jobs for me
In-Reply-To: <CACiMRGKNLpSFm7HPgrN2MZvW0=b-zP8Xqb3jDAhSU+Pi_nnJrQ@mail.gmail.com>
References: <CAAZd-jSUanxP3zxirePMki-H0yvnM_wv40vocBKJePu3gC4g2g@mail.gmail.com>
	<CACiMRGKNLpSFm7HPgrN2MZvW0=b-zP8Xqb3jDAhSU+Pi_nnJrQ@mail.gmail.com>
Message-ID: <CAAZd-jRXe=TDXFfSnEPACsG9-OvW9DZVANbCM3fGzWEgpp4GVw@mail.gmail.com>

Hi Gora,

Thanks for responding back.


I am actually interested in web services and also looking to contribute in
opene erp or tiny erp, as I have knowledge of ERP.


I have checked their websites, but could not figure it out, also because of
time constraints.


So I am searching for people who contribute in open erp.

Besides, I am posting code in www.projecteuler.net using python as my
programming langauge.

I want to use Django, but again, for python 3, there is no release
available I guess.



Regards,
Radhakrishna

From govind.menon at beacon.in  Wed Feb 20 08:38:15 2013
From: govind.menon at beacon.in (Govind Menon)
Date: Wed, 20 Feb 2013 13:08:15 +0530
Subject: [BangPypers] Python related jobs for me
Message-ID: <Y5K32kcnqxKK.nQVwCPPb@mail.beacon.in>


Hi,

i am anh consultant. Can you mail me your phone details? We can then have a chat. Or you could call me on +91 94483 79144. 

Regards...Govind Menon
-original message-
Subject: [BangPypers] Python related jobs for me
From: L Radhakrishna Rao <satishsagar83 at gmail.com>
Date: 20/02/2013 12:56 pm

Hi guys and girls,

I am software engineer and also an enthusiastic programmer.

I have learned python on my own, though not knowledgeable as you people
are. I have learned python purely out of my interest.

Now i would like to get involved in some serious python development
activities. Any suggestions?

The problem with HRs is that they will usually treat me as a freshers,
especially in india.

Your advice will definitely change my careers and also, I will get to do
the thing which I love.

Thanks and Regards,

Radhakrishna
_______________________________________________
BangPypers mailing list
BangPypers at python.org
http://mail.python.org/mailman/listinfo/bangpypers



From satishsagar83 at gmail.com  Wed Feb 20 08:44:39 2013
From: satishsagar83 at gmail.com (L Radhakrishna Rao)
Date: Wed, 20 Feb 2013 13:14:39 +0530
Subject: [BangPypers] Python related jobs for me
In-Reply-To: <Y5K32kcnqxKK.nQVwCPPb@mail.beacon.in>
References: <Y5K32kcnqxKK.nQVwCPPb@mail.beacon.in>
Message-ID: <CAAZd-jRMcjoFwLwjzqVmB0UsU=zzvAF15+ZCha1kggEE9_afgw@mail.gmail.com>

Hi Govind,

I will call you after 7 P.M.

Thanks and Regards,

Radhakrishna

From me at bibhas.in  Wed Feb 20 08:56:48 2013
From: me at bibhas.in (Bibhas Ch Debnath)
Date: Wed, 20 Feb 2013 13:26:48 +0530
Subject: [BangPypers] Python related jobs for me
In-Reply-To: <CAAZd-jRMcjoFwLwjzqVmB0UsU=zzvAF15+ZCha1kggEE9_afgw@mail.gmail.com>
References: <Y5K32kcnqxKK.nQVwCPPb@mail.beacon.in>
	<CAAZd-jRMcjoFwLwjzqVmB0UsU=zzvAF15+ZCha1kggEE9_afgw@mail.gmail.com>
Message-ID: <CACavVu2JxY2Ten77x_am5_r98+SFuv=eDcq1kZ3zFa9O28WA=A@mail.gmail.com>

   - Keep learning. Write small apps. Put all your code on Github. Consider
   it as your resume.
   - Attend events. Meet new people. Talk to them. There are a Lot of
   opportunities you can't find sitting at home.
   - Don't expect or try to jump start. Take it slow. Internship is a good
   idea.


----
Bibhas
http://bibhas.in


On 20 February 2013 13:14, L Radhakrishna Rao <satishsagar83 at gmail.com>wrote:

> Hi Govind,
>
> I will call you after 7 P.M.
>
> Thanks and Regards,
>
> Radhakrishna
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>

From satishsagar83 at gmail.com  Wed Feb 20 08:58:46 2013
From: satishsagar83 at gmail.com (L Radhakrishna Rao)
Date: Wed, 20 Feb 2013 13:28:46 +0530
Subject: [BangPypers] Python related jobs for me
In-Reply-To: <CACavVu2JxY2Ten77x_am5_r98+SFuv=eDcq1kZ3zFa9O28WA=A@mail.gmail.com>
References: <Y5K32kcnqxKK.nQVwCPPb@mail.beacon.in>
	<CAAZd-jRMcjoFwLwjzqVmB0UsU=zzvAF15+ZCha1kggEE9_afgw@mail.gmail.com>
	<CACavVu2JxY2Ten77x_am5_r98+SFuv=eDcq1kZ3zFa9O28WA=A@mail.gmail.com>
Message-ID: <CAAZd-jS_eMO1OTqk7unD3yu_jLfCot-v+2ta_x4oszXhYYzg9A@mail.gmail.com>

Hi Bibhas,

Thanks for the advice.

With Best Regards,
Radhakrishna

From aditya.athalye at gmail.com  Wed Feb 20 12:26:57 2013
From: aditya.athalye at gmail.com (Aditya Athalye)
Date: Wed, 20 Feb 2013 16:56:57 +0530
Subject: [BangPypers] Python related jobs for me (L Radhakrishna Rao)
Message-ID: <000301ce0f5d$341cf050$9c56d0f0$@gmail.com>

Radhakrishna,
ERPnext, recently posted a job opening at the MumPy mailing list:
https://groups.google.com/forum/?fromgroups=#!topic/mumpy/lAEjNqZEpJI 

They describe themselves as a small Python + JS + FOSS company. And looks
like their area of work matches your area of interest. Only, they are based
in Mumbai, so I guess they will like their ideal candidate to be based
there.

Best,
Aditya.


From satishsagar83 at gmail.com  Wed Feb 20 12:41:37 2013
From: satishsagar83 at gmail.com (L Radhakrishna Rao)
Date: Wed, 20 Feb 2013 17:11:37 +0530
Subject: [BangPypers] Python related jobs for me (L Radhakrishna Rao)
In-Reply-To: <CAAZd-jTRwiT=9k0ZEMnS-0o79tfkYK9jAdKuc=n5x-c56uqOYg@mail.gmail.com>
References: <000301ce0f5d$341cf050$9c56d0f0$@gmail.com>
	<CAAZd-jTRwiT=9k0ZEMnS-0o79tfkYK9jAdKuc=n5x-c56uqOYg@mail.gmail.com>
Message-ID: <CAAZd-jSoxKcbiL9XN7CaSqQ5RjqQf12EVUEYSGN_RZu2gAVK9g@mail.gmail.com>

Hi Aditya,

They are hiring for 0-4 years of experience.

This april, i will complete my 7 years of work experience.

Thanks a lot for sharing this with me.

With Best Regards,

Radhakrishna.

From satishsagar83 at gmail.com  Wed Feb 20 12:40:10 2013
From: satishsagar83 at gmail.com (L Radhakrishna Rao)
Date: Wed, 20 Feb 2013 17:10:10 +0530
Subject: [BangPypers] Python related jobs for me (L Radhakrishna Rao)
In-Reply-To: <000301ce0f5d$341cf050$9c56d0f0$@gmail.com>
References: <000301ce0f5d$341cf050$9c56d0f0$@gmail.com>
Message-ID: <CAAZd-jTRwiT=9k0ZEMnS-0o79tfkYK9jAdKuc=n5x-c56uqOYg@mail.gmail.com>

Hi Aditya,

Thanks a lot for sharing this with me.

With Best Regards,
Radhakrishna

From anandology at gmail.com  Thu Feb 21 05:50:56 2013
From: anandology at gmail.com (Anand Chitipothu)
Date: Thu, 21 Feb 2013 10:20:56 +0530
Subject: [BangPypers] list comprehensions and generator expressions in
	Python 3
Message-ID: <CAC7wXFz2ptRMdhw-9NHOg2U-EXNab7cEVbC83YmhvWGQyy3=Tg@mail.gmail.com>

Hi,

PEP 289 says "the semantic definition of a list comprehension in
Python 3.0 will be equivalent to list(<generator expression>).

http://www.python.org/dev/peps/pep-0289/

I've just come across a bug reported by Peter Norvig, showing counterexamples.

http://bugs.python.org/issue14845

Very informative to understand the subtle differences between the
semantics of list comprehensions and generator expressions.

Anand

From workforsiva at gmail.com  Thu Feb 21 09:13:43 2013
From: workforsiva at gmail.com (Siva Ranganath)
Date: Thu, 21 Feb 2013 13:43:43 +0530
Subject: [BangPypers] regarding installation of python
Message-ID: <CACW12xBHsR07OVU6oB+4wA2u0ObOcRJiVALhQy6XP=L-H4jJVQ@mail.gmail.com>

hello BangPypers at python.org


I have RedHat linux in my Laptop where iam accessing through VMware. how
can install python librearies in Linux to execute some python scripts.
please help me


Siva Ranganath
9000163232

From gora at mimirtech.com  Thu Feb 21 09:52:23 2013
From: gora at mimirtech.com (Gora Mohanty)
Date: Thu, 21 Feb 2013 14:22:23 +0530
Subject: [BangPypers] regarding installation of python
In-Reply-To: <CACW12xBHsR07OVU6oB+4wA2u0ObOcRJiVALhQy6XP=L-H4jJVQ@mail.gmail.com>
References: <CACW12xBHsR07OVU6oB+4wA2u0ObOcRJiVALhQy6XP=L-H4jJVQ@mail.gmail.com>
Message-ID: <CACiMRGLLPZVsQkifRm09m6X5Vh9FXoFWNGYEFEDR_gTj6n=2vA@mail.gmail.com>

On 21 February 2013 13:43, Siva Ranganath <workforsiva at gmail.com> wrote:
> hello BangPypers at python.org
>
>
> I have RedHat linux in my Laptop where iam accessing through VMware. how
> can install python librearies in Linux to execute some python scripts.
> please help me

This is better suited to a Redhat forum, or RHEL support
if you purchased that. It is also a very basic question about
maintaining system packages, and you would do well to learn
such things on your own.

Been a while since I used RPM-based systems, but
  yum install python
should do the trick. You will need to have set up
network access on your VM.

Regards,
Gora

From satishsagar83 at gmail.com  Thu Feb 21 10:13:40 2013
From: satishsagar83 at gmail.com (L Radhakrishna Rao)
Date: Thu, 21 Feb 2013 14:43:40 +0530
Subject: [BangPypers] list comprehensions and generator expressions in
 Python 3
In-Reply-To: <CAC7wXFz2ptRMdhw-9NHOg2U-EXNab7cEVbC83YmhvWGQyy3=Tg@mail.gmail.com>
References: <CAC7wXFz2ptRMdhw-9NHOg2U-EXNab7cEVbC83YmhvWGQyy3=Tg@mail.gmail.com>
Message-ID: <CAAZd-jSRJDUmF=g-TSgvH6SKEB929ALfMr31sLhap6EhLLKJBw@mail.gmail.com>

Dive into python 3 by mark pilgirm has mentioned about this.

Regards,

Radhakrishna

From steve at lonetwin.net  Thu Feb 21 11:09:51 2013
From: steve at lonetwin.net (steve)
Date: Thu, 21 Feb 2013 15:39:51 +0530
Subject: [BangPypers] regarding installation of python
In-Reply-To: <CACW12xBHsR07OVU6oB+4wA2u0ObOcRJiVALhQy6XP=L-H4jJVQ@mail.gmail.com>
References: <CACW12xBHsR07OVU6oB+4wA2u0ObOcRJiVALhQy6XP=L-H4jJVQ@mail.gmail.com>
Message-ID: <5125F26F.7040504@lonetwin.net>

Hello Siva,

On Thursday 21 February 2013 01:43 PM, Siva Ranganath wrote:
> hello BangPypers at python.org
>
>
> I have RedHat linux in my Laptop where iam accessing through VMware. how
> can install python librearies in Linux to execute some python scripts.
> please help me
>

If you've installed a recent Red Hat based distribution(*), most likely python 
is already installed on your system, since a lot of tools (including yum, the 
package manager) are written in python. Just run 'python' from the prompt to verify.

It is possible though that you do not have the entire python standard library 
installed. To do this, simply execute 'yum install python-devel'. Assuming that 
your VM is able communicate with a yum repository (over the network or on the 
host), this command would install the set of standard python libraries/modules.

cheers,
- steve


(*) There hasn't been a distribution named Red Hat Linux for a while now, 
there's either - Red Hat Enterprise Linux (ie: RHEL) or Fedora.


From smchawla at cisco.com  Fri Feb 22 07:11:32 2013
From: smchawla at cisco.com (Smriti)
Date: Fri, 22 Feb 2013 06:11:32 +0000 (UTC)
Subject: [BangPypers] Openings with Cisco Bangalore - Server side Python Web
	Application Development Experts
Message-ID: <loom.20130222T070630-51@post.gmane.org>

Hi All,

I have some very exciting openings with Cisco Bangalore for Python Web 
Application Development Experts. 

If you feel that the opportunity matches your career aspirations, kindly revert 
back to me with you updated profile and I shall get in touch with you to discuss 
the position in more detail.

Job Title - Server side Python Web Application Development Experts

Job Description 

CISCO SRTG (Security and Routing Technology Group) seeks a bright, motivated 
Software Engineer to join a highly driven and talented team involved in 
development of security solutions for branch routers and cloud deployments. As 
enterprises migrate to cloud based services, security solutions have to be 
tailored to meet the security challenges of this environment. The next 
generation routing platforms that embedding security in the network, also demand 
security solutions that are intelligent and highly reactive. If security and 
cloud excites you, reach out to us.

Seeking highly passionate and self-driven young individuals to work on cutting 
edge technologies and platforms

Responsibilities:

Work on development of Cisco Cloud Connector platform.
Network Focused Web applications 

Required Skill set
?	5+ to 10 years of development experience with one or more programming 
languages(C/C++/Java). 
?	Expert python programming skills with 3+ years with python
?	Hands-on experience in building high-performance and scalable python 
based web applications
?	Developed REST APIs, Web Services using one or more Python frameworks 
and cloud experience is a huge plus.
?	Familiarity with python web frameworks like Django, Tornado, Web2Py, 
Google AppEngine etc
?	Working knowledge of asynchronous frameworks like twisted, 
gevent/eventlet, coroutines will be an advantage
?	Good understanding of networking concepts and L7 protocols like HTTP is 
a plus 
?	Linux system level knowledge (system calls, pthreads, mutexes, shared 
memory, non-blocking IO etc) would be well appreciated 
?	Excellent communication skills. 
?	Ability to articulate thoughts and ideas clearly.
?	Quick to learn new technologies.

Warm Regards,
Smriti Chawla
smchawla at cisco.com


From tsk.kamath at gmail.com  Mon Feb 25 15:11:08 2013
From: tsk.kamath at gmail.com (T S KAMATH)
Date: Mon, 25 Feb 2013 19:41:08 +0530
Subject: [BangPypers] help to understand this code..
In-Reply-To: <5125F26F.7040504@lonetwin.net>
References: <CACW12xBHsR07OVU6oB+4wA2u0ObOcRJiVALhQy6XP=L-H4jJVQ@mail.gmail.com>
	<5125F26F.7040504@lonetwin.net>
Message-ID: <631E8584-BF19-4691-9675-760B060C8DBB@gmail.com>

Hi,

I have no cue on php and its usage.. i am stuck.. I just wanted to list all the files and dir of the folder on webpage and unfortunately the web-server is set up for php.. 

http://www.php.net/manual/en/function.scandir.php#109115

<code>

<?php
//-- Directory Navigation with SCANDIR
//-- 
//-- optional placemenet
$exclude_list = array(".", "..", "example.txt");
if (isset($_GET["dir"])) {
  $dir_path = $_SERVER["DOCUMENT_ROOT"]."/".$_GET["dir"];
}
else {
  $dir_path = $_SERVER["DOCUMENT_ROOT"]."/";
}
//-- until here
function dir_nav() {
  global $exclude_list, $dir_path;
  $directories = array_diff(scandir($dir_path), $exclude_list);
  echo "<ul style='list-style:none;padding:0'>";
  foreach($directories as $entry) {
    if(is_dir($dir_path.$entry)) {
      echo "<li style='margin-left:1em;'>[`] <a href='?dir=".$_GET["dir"].$entry."/"."'>".$entry."</a></li>";
    }
  }
  echo "</ul>";
  //-- separator
  echo "<ul style='list-style:none;padding:0'>";
  foreach($directories as $entry) {
    if(is_file($dir_path.$entry)) {
      echo "<li style='margin-left:1em;'>[ ] <a href='?file=".$_GET["dir"].$entry."'>".$entry."</a></li>";
    }
  }
  echo "</ul>";
}
dir_nav();
//-- optional placement
if (isset($_GET["file"])) {
  echo "<div style='margin:1em;border:1px solid Silver;'>";
  highlight_file($dir_path.$_GET['file']);
  echo "</div>";
}
//-- until here
//--
//-- Because I love php.net
?>

</code>

can i get someone to show me some direction.. 

Srikanth Kamath

From gora at mimirtech.com  Mon Feb 25 15:44:28 2013
From: gora at mimirtech.com (Gora Mohanty)
Date: Mon, 25 Feb 2013 20:14:28 +0530
Subject: [BangPypers] help to understand this code..
In-Reply-To: <631E8584-BF19-4691-9675-760B060C8DBB@gmail.com>
References: <CACW12xBHsR07OVU6oB+4wA2u0ObOcRJiVALhQy6XP=L-H4jJVQ@mail.gmail.com>
	<5125F26F.7040504@lonetwin.net>
	<631E8584-BF19-4691-9675-760B060C8DBB@gmail.com>
Message-ID: <CACiMRGJHHhAm2463U54fKOt2dfX=-grKFSNzbHe8eUhRrZA4kA@mail.gmail.com>

On 25 February 2013 19:41, T S KAMATH <tsk.kamath at gmail.com> wrote:
> Hi,
>
> I have no cue on php and its usage.. i am stuck.. I just wanted to list all the files and dir of the folder on webpage and unfortunately the web-server is set up for php..
[...]

So, why are you asking here? It is off-topic, and you
would probably have better luck at getting an answer
on a PHP forum.

Regards,
Gora

From tsk.kamath at gmail.com  Mon Feb 25 16:10:20 2013
From: tsk.kamath at gmail.com (Srikanth Kamath)
Date: Mon, 25 Feb 2013 20:40:20 +0530
Subject: [BangPypers] help to understand this code..
In-Reply-To: <CACiMRGJHHhAm2463U54fKOt2dfX=-grKFSNzbHe8eUhRrZA4kA@mail.gmail.com>
References: <CACW12xBHsR07OVU6oB+4wA2u0ObOcRJiVALhQy6XP=L-H4jJVQ@mail.gmail.com>
	<5125F26F.7040504@lonetwin.net>
	<631E8584-BF19-4691-9675-760B060C8DBB@gmail.com>
	<CACiMRGJHHhAm2463U54fKOt2dfX=-grKFSNzbHe8eUhRrZA4kA@mail.gmail.com>
Message-ID: <91E2813E-7E18-4B87-AA12-278E9187415F@gmail.com>

Oops 


Regards
Srikanth Kamath, BDM SAARC

Sent from my Mobil Device
~ I unable to access emails from laptop, maybe in meeting or 
~~travelling hence response will be delayed, thanks for understanding and cooperation.

On 25-Feb-2013, at 8:14 PM, Gora Mohanty <gora at mimirtech.com> wrote:

On 25 February 2013 19:41, T S KAMATH <tsk.kamath at gmail.com> wrote:
> Hi,
> 
> I have no cue on php and its usage.. i am stuck.. I just wanted to list all the files and dir of the folder on webpage and unfortunately the web-server is set up for php..
[...]

So, why are you asking here? It is off-topic, and you
would probably have better luck at getting an answer
on a PHP forum.

Regards,
Gora
_______________________________________________
BangPypers mailing list
BangPypers at python.org
http://mail.python.org/mailman/listinfo/bangpypers

From pranjal.mittal.ece10 at iitbhu.ac.in  Mon Feb 25 16:21:58 2013
From: pranjal.mittal.ece10 at iitbhu.ac.in (Pranjal Mittal)
Date: Mon, 25 Feb 2013 20:51:58 +0530
Subject: [BangPypers] Python dictionaries, deleting elements while iterating.
Message-ID: <CALiP1o+dd5uR+nGdoG4peCdFtd6MyhhcToP7yTi_-JQVuDrZ+Q@mail.gmail.com>

Hi all,

I was writing a piece of code that deletes items from Python Dictionaries
when a certain condition is met. while iterating over the dictionary.

http://dpaste.com/hold/995010/

However that leads to a RunTime Error.
Though I figured out an alternate solution, I still wonder why shouldn't
something like *Case-1 *(in the code) work ideally.



- Pranjal Mittal

--
B.Tech. Part III,
Indian Institute of Technology, BHU,
Varanasi -221005

From anandology at gmail.com  Mon Feb 25 17:03:06 2013
From: anandology at gmail.com (Anand Chitipothu)
Date: Mon, 25 Feb 2013 21:33:06 +0530
Subject: [BangPypers] Python dictionaries,
	deleting elements while iterating.
In-Reply-To: <CALiP1o+dd5uR+nGdoG4peCdFtd6MyhhcToP7yTi_-JQVuDrZ+Q@mail.gmail.com>
References: <CALiP1o+dd5uR+nGdoG4peCdFtd6MyhhcToP7yTi_-JQVuDrZ+Q@mail.gmail.com>
Message-ID: <CAC7wXFzT5U_ycJ3mx0hFjj==2+R-JwsWqTTsPyMUuvTbEiMWLg@mail.gmail.com>

On Mon, Feb 25, 2013 at 8:51 PM, Pranjal Mittal <
pranjal.mittal.ece10 at iitbhu.ac.in> wrote:
>
> Hi all,
>
> I was writing a piece of code that deletes items from Python Dictionaries
> when a certain condition is met. while iterating over the dictionary.
>
> http://dpaste.com/hold/995010/
>
> However that leads to a RunTime Error.
> Though I figured out an alternate solution, I still wonder why shouldn't
> something like *Case-1 *(in the code) work ideally.

You can iterate over items:

for key, value in dictionary.items():
    if value == 1:
        del dictionary[key]

Sometimes it is easier to create a new dictionary instead of modifying the
existing one.

dictionary = dict((k, v) for k, v in dictionary.items() if v != 1)

Anand
http://anandology.com/

From ragsagar at gmail.com  Mon Feb 25 17:20:25 2013
From: ragsagar at gmail.com (ragsagar)
Date: Mon, 25 Feb 2013 21:50:25 +0530
Subject: [BangPypers] Python dictionaries,
	deleting elements while iterating.
In-Reply-To: <CAC7wXFzT5U_ycJ3mx0hFjj==2+R-JwsWqTTsPyMUuvTbEiMWLg@mail.gmail.com>
References: <CALiP1o+dd5uR+nGdoG4peCdFtd6MyhhcToP7yTi_-JQVuDrZ+Q@mail.gmail.com>
	<CAC7wXFzT5U_ycJ3mx0hFjj==2+R-JwsWqTTsPyMUuvTbEiMWLg@mail.gmail.com>
Message-ID: <CACEP=sZZAJK8G-mOFGMp-yOppyit2qPezv0XU51LV3CaOa=faQ@mail.gmail.com>

On Mon, Feb 25, 2013 at 9:33 PM, Anand Chitipothu <anandology at gmail.com>wrote:

>
> You can iterate over items:
>
> for key, value in dictionary.items():
>     if value == 1:
>         del dictionary[key]
>

I think in Python 3.*, dict.items() returns iterator. If so it won't work
in Python 3.* . So converting it to list would be a better option.

for key in list(dictionary):
   if dictionary[key] == 1:
       del dictionary[key]



-- 
blog : ragsagar.wordpress.com
mail id : python -c "print '@'.join(['ragsagar','.'.join([x for x in
['gmail','com']])])"

From anandology at gmail.com  Mon Feb 25 17:45:11 2013
From: anandology at gmail.com (Anand Chitipothu)
Date: Mon, 25 Feb 2013 22:15:11 +0530
Subject: [BangPypers] Python dictionaries,
	deleting elements while iterating.
In-Reply-To: <CACEP=sZZAJK8G-mOFGMp-yOppyit2qPezv0XU51LV3CaOa=faQ@mail.gmail.com>
References: <CALiP1o+dd5uR+nGdoG4peCdFtd6MyhhcToP7yTi_-JQVuDrZ+Q@mail.gmail.com>
	<CAC7wXFzT5U_ycJ3mx0hFjj==2+R-JwsWqTTsPyMUuvTbEiMWLg@mail.gmail.com>
	<CACEP=sZZAJK8G-mOFGMp-yOppyit2qPezv0XU51LV3CaOa=faQ@mail.gmail.com>
Message-ID: <CAC7wXFzncBgJKWOZrHLSTpwStLYt6x1P675jn_0pf-DBtCeO=Q@mail.gmail.com>

On Mon, Feb 25, 2013 at 9:50 PM, ragsagar <ragsagar at gmail.com> wrote:

> On Mon, Feb 25, 2013 at 9:33 PM, Anand Chitipothu <anandology at gmail.com
> >wrote:
>
> >
> > You can iterate over items:
> >
> > for key, value in dictionary.items():
> >     if value == 1:
> >         del dictionary[key]
> >
>
> I think in Python 3.*, dict.items() returns iterator. If so it won't work
> in Python 3.* . So converting it to list would be a better option.
>
> for key in list(dictionary):
>    if dictionary[key] == 1:
>        del dictionary[key]
>

I think, the second solution I suggested is more Pythonic than using a for
loop. In Python 3, it can be written as a dictionary-comprehension.

dictionary = {(k, v) for k, v in dictionary.items() if v != 1}

Anand

From ragsagar at gmail.com  Mon Feb 25 17:55:20 2013
From: ragsagar at gmail.com (ragsagar)
Date: Mon, 25 Feb 2013 22:25:20 +0530
Subject: [BangPypers] Python dictionaries,
	deleting elements while iterating.
In-Reply-To: <CAC7wXFzncBgJKWOZrHLSTpwStLYt6x1P675jn_0pf-DBtCeO=Q@mail.gmail.com>
References: <CALiP1o+dd5uR+nGdoG4peCdFtd6MyhhcToP7yTi_-JQVuDrZ+Q@mail.gmail.com>
	<CAC7wXFzT5U_ycJ3mx0hFjj==2+R-JwsWqTTsPyMUuvTbEiMWLg@mail.gmail.com>
	<CACEP=sZZAJK8G-mOFGMp-yOppyit2qPezv0XU51LV3CaOa=faQ@mail.gmail.com>
	<CAC7wXFzncBgJKWOZrHLSTpwStLYt6x1P675jn_0pf-DBtCeO=Q@mail.gmail.com>
Message-ID: <CACEP=sYr0J+WO7AXBZd+R+8w80N8GN-yjG53F4nu9UJjjOq3uQ@mail.gmail.com>

On Mon, Feb 25, 2013 at 10:15 PM, Anand Chitipothu <anandology at gmail.com>wrote:

>
>
> I think, the second solution I suggested is more Pythonic than using a for
> loop. In Python 3, it can be written as a dictionary-comprehension.
>
> dictionary = {(k, v) for k, v in dictionary.items() if v != 1}
>
>
True. Using dictionary comprehension is the apt solution. I was just
talking about the first solution you suggested.


-- 
blog : ragsagar.wordpress.com
mail id : python -c "print '@'.join(['ragsagar','.'.join([x for x in
['gmail','com']])])"

From thavamuni at gmail.com  Mon Feb 25 18:17:06 2013
From: thavamuni at gmail.com (Thava Alagu)
Date: Mon, 25 Feb 2013 22:47:06 +0530
Subject: [BangPypers] Python dictionaries,
	deleting elements while iterating
Message-ID: <CAEQL+9fd-DTxOrGG20S-ssfp_z3nhT+-jc3_wrteXtqzuV8cmw@mail.gmail.com>

Hi,

  Earlier answers have rightly pointed out elegant solutions,
out of which dictionary comprehension is the most pythonic.
btw, dictionary comprehension is available in Python 2.7 and 3+.

with regards to why deleting while iterating is a problem --
it is like cutting the branch of the tree while standing on it.

For efficiency reasons, the python implementations of iterators are
free to use some sort of linked list like representation for iterators--
when you delete the current element the iterator gets confused
how to go to next element.

Regards,
-thava

On Mon, Feb 25, 2013 at 10:15 PM,  <bangpypers-request at python.org> wrote:

> Message: 4
> Date: Mon, 25 Feb 2013 20:51:58 +0530
> From: Pranjal Mittal <pranjal.mittal.ece10 at iitbhu.ac.in>
> To: Bangalore Python Users Group - India <bangpypers at python.org>
> Subject: [BangPypers] Python dictionaries, deleting elements while
>         iterating.
> Message-ID:
>         <CALiP1o+dd5uR+nGdoG4peCdFtd6MyhhcToP7yTi_-JQVuDrZ+Q at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hi all,
>
> I was writing a piece of code that deletes items from Python Dictionaries
> when a certain condition is met. while iterating over the dictionary.
>
> http://dpaste.com/hold/995010/
>
> However that leads to a RunTime Error.
> Though I figured out an alternate solution, I still wonder why shouldn't
> something like *Case-1 *(in the code) work ideally.
>
>
>
> - Pranjal Mittal
>
> --
> B.Tech. Part III,
> Indian Institute of Technology, BHU,
> Varanasi -221005

From tsk.kamath at gmail.com  Tue Feb 26 03:47:40 2013
From: tsk.kamath at gmail.com (T S KAMATH)
Date: Tue, 26 Feb 2013 08:17:40 +0530
Subject: [BangPypers] help to understand this code
In-Reply-To: <631E8584-BF19-4691-9675-760B060C8DBB@gmail.com>
References: <CACW12xBHsR07OVU6oB+4wA2u0ObOcRJiVALhQy6XP=L-H4jJVQ@mail.gmail.com>
	<5125F26F.7040504@lonetwin.net>
	<631E8584-BF19-4691-9675-760B060C8DBB@gmail.com>
Message-ID: <26C1411C-BB82-4465-8E77-95DFC30356A3@gmail.com>

My Apologies for yesterdays post.. It was click "send" instead of "draft"..  Moderator pls "del" the earlier post.

I am no developer nor a hardcore programer. I just use open Source to find "work around" to issues and or to automate. all my stuff is open source and free to use. Hence pls excuse if some of my post.. 

I shall send my correct post.. with the correct heading.. Thanks in advance

From tsk.kamath at gmail.com  Tue Feb 26 03:49:43 2013
From: tsk.kamath at gmail.com (T S KAMATH)
Date: Tue, 26 Feb 2013 08:19:43 +0530
Subject: [BangPypers] Listing files in a folder using python
In-Reply-To: <631E8584-BF19-4691-9675-760B060C8DBB@gmail.com>
References: <CACW12xBHsR07OVU6oB+4wA2u0ObOcRJiVALhQy6XP=L-H4jJVQ@mail.gmail.com>
	<5125F26F.7040504@lonetwin.net>
	<631E8584-BF19-4691-9675-760B060C8DBB@gmail.com>
Message-ID: <1FBF9C96-C062-4769-A942-1725DFEEE970@gmail.com>

as a newbie to python, I am looking for some advance examples for some functions.. so that my learning curve is short.. 

I have used a code in php http://www.php.net/manual/en/function.scandir.php#109115, which works fine, 

My question is can a similar featured listing be done in Python.. if you could guide me it would be great..



From b.ghose at gmail.com  Tue Feb 26 03:58:29 2013
From: b.ghose at gmail.com (Baishampayan Ghose)
Date: Tue, 26 Feb 2013 08:28:29 +0530
Subject: [BangPypers] Listing files in a folder using python
In-Reply-To: <1FBF9C96-C062-4769-A942-1725DFEEE970@gmail.com>
References: <CACW12xBHsR07OVU6oB+4wA2u0ObOcRJiVALhQy6XP=L-H4jJVQ@mail.gmail.com>
	<5125F26F.7040504@lonetwin.net>
	<631E8584-BF19-4691-9675-760B060C8DBB@gmail.com>
	<1FBF9C96-C062-4769-A942-1725DFEEE970@gmail.com>
Message-ID: <CAJ3UTYKahCdtb1H6DLUbKsy0W2djSMQwxW6a6HtETZvM+qmRmQ@mail.gmail.com>

I didn't read the whole PHP code, but I guess you are trying to scan a
directory for files, etc. This can be accomplished using the os.walk
function in Python - http://docs.python.org/2/library/os.html#os.walk

Regards,
BG

On Tue, Feb 26, 2013 at 8:19 AM, T S KAMATH <tsk.kamath at gmail.com> wrote:
> as a newbie to python, I am looking for some advance examples for some functions.. so that my learning curve is short..
>
> I have used a code in php http://www.php.net/manual/en/function.scandir.php#109115, which works fine,
>
> My question is can a similar featured listing be done in Python.. if you could guide me it would be great..
>
>
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers



--
Baishampayan Ghose
b.ghose at gmail.com

From gopalakrishnan.subramani at gmail.com  Tue Feb 26 04:12:34 2013
From: gopalakrishnan.subramani at gmail.com (Gopalakrishnan Subramani)
Date: Tue, 26 Feb 2013 08:42:34 +0530
Subject: [BangPypers] help to understand this code
In-Reply-To: <26C1411C-BB82-4465-8E77-95DFC30356A3@gmail.com>
References: <CACW12xBHsR07OVU6oB+4wA2u0ObOcRJiVALhQy6XP=L-H4jJVQ@mail.gmail.com>
	<5125F26F.7040504@lonetwin.net>
	<631E8584-BF19-4691-9675-760B060C8DBB@gmail.com>
	<26C1411C-BB82-4465-8E77-95DFC30356A3@gmail.com>
Message-ID: <CAHhacd1RbbDLr2SrOGWO1DtJ67hzPkxQYvxRiv=BVR2hTtWxpw@mail.gmail.com>

I still recommend you go through the fundamentals of Python, I don't see
any hurry in learning something new. Starts with printing "hello world",
then conditions, loops, functions, Class, Objects. You don't need more than
2 weeks for this homework. Couple of late nights and weekends help you, It
is worth for the effort.




On Tue, Feb 26, 2013 at 8:17 AM, T S KAMATH <tsk.kamath at gmail.com> wrote:

> My Apologies for yesterdays post.. It was click "send" instead of
> "draft"..  Moderator pls "del" the earlier post.
>
> I am no developer nor a hardcore programer. I just use open Source to find
> "work around" to issues and or to automate. all my stuff is open source and
> free to use. Hence pls excuse if some of my post..
>
> I shall send my correct post.. with the correct heading.. Thanks in advance
> _______________________________________________
> BangPypers mailing list
> BangPypers at python.org
> http://mail.python.org/mailman/listinfo/bangpypers
>

From navin.kabra at gmail.com  Tue Feb 26 06:01:57 2013
From: navin.kabra at gmail.com (Navin Kabra)
Date: Tue, 26 Feb 2013 10:31:57 +0530
Subject: [BangPypers] Python dictionaries,
	deleting elements while iterating.
In-Reply-To: <CAC7wXFzncBgJKWOZrHLSTpwStLYt6x1P675jn_0pf-DBtCeO=Q@mail.gmail.com>
References: <CALiP1o+dd5uR+nGdoG4peCdFtd6MyhhcToP7yTi_-JQVuDrZ+Q@mail.gmail.com>
	<CAC7wXFzT5U_ycJ3mx0hFjj==2+R-JwsWqTTsPyMUuvTbEiMWLg@mail.gmail.com>
	<CACEP=sZZAJK8G-mOFGMp-yOppyit2qPezv0XU51LV3CaOa=faQ@mail.gmail.com>
	<CAC7wXFzncBgJKWOZrHLSTpwStLYt6x1P675jn_0pf-DBtCeO=Q@mail.gmail.com>
Message-ID: <87621fy8fu.fsf@smriti.com>

Anand Chitipothu <anandology at gmail.com> writes:
> loop. In Python 3, it can be written as a dictionary-comprehension.

Dictionary and set comprehensions are also available in Python 2.7

From benignbala at gmail.com  Tue Feb 26 13:15:27 2013
From: benignbala at gmail.com (Balachandran Sivakumar)
Date: Tue, 26 Feb 2013 17:45:27 +0530
Subject: [BangPypers] Listing files in a folder using python
In-Reply-To: <1FBF9C96-C062-4769-A942-1725DFEEE970@gmail.com>
References: <CACW12xBHsR07OVU6oB+4wA2u0ObOcRJiVALhQy6XP=L-H4jJVQ@mail.gmail.com>
	<5125F26F.7040504@lonetwin.net>
	<631E8584-BF19-4691-9675-760B060C8DBB@gmail.com>
	<1FBF9C96-C062-4769-A942-1725DFEEE970@gmail.com>
Message-ID: <CAMbkTgK26bex5Zn+B1nQvok1GLPq9avUBWnnPyZM=vJsABPXWw@mail.gmail.com>

Hi,

On Tue, Feb 26, 2013 at 8:19 AM, T S KAMATH <tsk.kamath at gmail.com> wrote:
> as a newbie to python, I am looking for some advance examples for some functions.. so that my learning curve is short..
>
> I have used a code in php http://www.php.net/manual/en/function.scandir.php#109115, which works fine,


If it is not a production-grade script, you can just do

python -m SimpleHTTPServer

from your bash after getting into the folder that you want to server.
Python will server it for you :) Thanks



-- 
Thank you
Balachandran Sivakumar

Arise Awake and stop not till the goal is reached.
                                                             - Swami Vivekananda

Mail: benignbala at gmail.com
Blog: http://benignbala.wordpress.com/