From ruszkait at gmail.com  Wed Jul  1 08:35:42 2015
From: ruszkait at gmail.com (Tamas Ruszkai)
Date: Wed, 1 Jul 2015 08:35:42 +0200
Subject: [Python.NET] Action delegate in Python 3.4
Message-ID: <CADy4ko_LmfUSzFxRVq92Rm2m6DwWirhEXrar=DVVfBSaK8ctTA@mail.gmail.com>

I have installed CPython 3.4 64bit and
pythonnet-2.1.0.dev1-cp34-none-win_amd64.whl

I have tried to use the generic action delegate, but failed.

Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:44:40) [MSC v.1600 64
bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import clr
>>> clr.AddReference("System")
<System.Reflection.RuntimeAssembly object at 0x0000000002DFAC18>
>>> import System
>>> def hello(number):
...           print(number)
...
>>> deleg = System.Action[int](hello)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unsubscriptable object
>>>

However when I want to instantiate a genrics dictionary then it works.

>>> clr.AddReference("System.Collections")
<System.Reflection.RuntimeAssembly object at 0x0000000002397550>
>>> import System.Collections.Generic
>>> dict = System.Collections.Generic.Dictionary[int,str]()
>>> dict[5]="asd"
>>> print(dict[5])
asd
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From tony at pyxll.com  Wed Jul  1 18:09:33 2015
From: tony at pyxll.com (Tony Roberts)
Date: Wed, 01 Jul 2015 16:09:33 +0000
Subject: [Python.NET] Action delegate in Python 3.4
In-Reply-To: <CADy4ko_LmfUSzFxRVq92Rm2m6DwWirhEXrar=DVVfBSaK8ctTA@mail.gmail.com>
References: <CADy4ko_LmfUSzFxRVq92Rm2m6DwWirhEXrar=DVVfBSaK8ctTA@mail.gmail.com>
Message-ID: <CA+Xbcsa21MfNn3NVdg4pq4KxR8CLSrBGVQNQ5Vw682P6iKuvEw@mail.gmail.com>

Hi,

looks like this just hasn't been implemented yet. I don't think it's
specific to the 3.4 build.

Could you create a github issue with your example if you get a chance? (
https://github.com/pythonnet/pythonnet/)

If you want to have a go at implementing it yourself, take a look at the
classes DelegateObject (delegateobject.cs) and GenericType
(generictype.cs), and the method ClassManager.CreateClass in
classmanager.cs.

cheers,
Tony

On Wed, Jul 1, 2015 at 7:35 AM Tamas Ruszkai <ruszkait at gmail.com> wrote:

> I have installed CPython 3.4 64bit and
> pythonnet-2.1.0.dev1-cp34-none-win_amd64.whl
>
> I have tried to use the generic action delegate, but failed.
>
> Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:44:40) [MSC v.1600 64
> bit (AMD64)] on win32
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import clr
> >>> clr.AddReference("System")
> <System.Reflection.RuntimeAssembly object at 0x0000000002DFAC18>
> >>> import System
> >>> def hello(number):
> ...           print(number)
> ...
> >>> deleg = System.Action[int](hello)
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> TypeError: unsubscriptable object
> >>>
>
> However when I want to instantiate a genrics dictionary then it works.
>
> >>> clr.AddReference("System.Collections")
> <System.Reflection.RuntimeAssembly object at 0x0000000002397550>
> >>> import System.Collections.Generic
> >>> dict = System.Collections.Generic.Dictionary[int,str]()
> >>> dict[5]="asd"
> >>> print(dict[5])
> asd
> _________________________________________________
> Python.NET mailing list - PythonDotNet at python.org
> https://mail.python.org/mailman/listinfo/pythondotnet
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From germanocarella.list at gmail.com  Fri Jul  3 13:50:25 2015
From: germanocarella.list at gmail.com (germano carella)
Date: Fri, 03 Jul 2015 13:50:25 +0200
Subject: [Python.NET] python.net and autocompletion
Message-ID: <55967701.50202@gmail.com>

Hi,
I'm attempting to write a python IDE accessible for blind persons.
I'm a blind programmer and I need it to develop my applications.
I'd like to create an autocompletion db containing all modules, 
functions, classes that a developer can use.
Now, there is a way, with clr module, to retrieve list of available 
modules to import?
Or, there is a way to implement a c# class that makes it possible?
Thanks!
Germano

From brad at fie.us  Mon Jul  6 18:47:04 2015
From: brad at fie.us (Bradley Friedman)
Date: Mon, 6 Jul 2015 12:47:04 -0400
Subject: [Python.NET] python.net and autocompletion
In-Reply-To: <55967701.50202@gmail.com>
References: <55967701.50202@gmail.com>
Message-ID: <8BFCB035-7259-4783-BD33-6EB533A06FD5@fie.us>

This is not exactly what you asked for.  However:
WingIDE does this and uses a piece of open-source code to do it completely in python.
A copy can be found here:
http://www.voidspace.org.uk/downloads/generate_pi.py <http://www.voidspace.org.uk/downloads/generate_pi.py>
More up-to-date versions can be found within WingIDE installs themselves.
This piece of code is open source and therefore available to you to use.
It?s not a .net library.  It?s pure python.  It should be easily hacked-up and used by you to the same effect.  It already exists and is in wide use.

-brad
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From denis.akhiyarov at gmail.com  Thu Jul  9 17:51:39 2015
From: denis.akhiyarov at gmail.com (Denis Akhiyarov)
Date: Thu, 09 Jul 2015 15:51:39 +0000
Subject: [Python.NET] Debugging CPYTHON embedded in .NET
Message-ID: <CALxxJLT_-ST4A_F3OY6C=Jm+ohCh=coc4V92L12euEScaZLWxA@mail.gmail.com>

Dear users and developers of PythonNET:

How do you debug CPython embedded in . NET?

Did you find any reliable way to do this with IDE such as PTVS or Pycharm?

PTVS offers mixed-mode and remote debugging, none of which seem to be
usable with PythonNET.

Thanks,
Denis
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From tony at pyxll.com  Fri Jul 10 10:23:31 2015
From: tony at pyxll.com (Tony Roberts)
Date: Fri, 10 Jul 2015 08:23:31 +0000
Subject: [Python.NET] Debugging CPYTHON embedded in .NET
In-Reply-To: <CALxxJLT_-ST4A_F3OY6C=Jm+ohCh=coc4V92L12euEScaZLWxA@mail.gmail.com>
References: <CALxxJLT_-ST4A_F3OY6C=Jm+ohCh=coc4V92L12euEScaZLWxA@mail.gmail.com>
Message-ID: <CA+XbcsZrP30Gzpo9JftQDfhXMQNFMSoT2B1XGpt-76haW283JQ@mail.gmail.com>

Hi Denis,

you can use the remote debugger in PyCharm to attach to your .NET process.
It requires a small bit of python code in your application to make it
connect to the PyCharm debug server, but it works very well.

See the instructions here:
http://blog.jetbrains.com/pycharm/2010/12/python-remote-debug-with-pycharm/

I've got an open request to enhance the new 'attach to process' feature
that appeared in 4.0 so that it could attach to processes embedding python
and not just python.exe (https://youtrack.jetbrains.com/issue/PY-14181),
but for now using the debug server is your best option.

Best regards,
Tony


On Thu, Jul 9, 2015 at 4:51 PM Denis Akhiyarov <denis.akhiyarov at gmail.com>
wrote:

> Dear users and developers of PythonNET:
>
> How do you debug CPython embedded in . NET?
>
> Did you find any reliable way to do this with IDE such as PTVS or Pycharm?
>
> PTVS offers mixed-mode and remote debugging, none of which seem to be
> usable with PythonNET.
>
> Thanks,
> Denis
> _________________________________________________
> Python.NET mailing list - PythonDotNet at python.org
> https://mail.python.org/mailman/listinfo/pythondotnet
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From dlenski at gmail.com  Tue Jul 21 06:00:14 2015
From: dlenski at gmail.com (Dan Lenski)
Date: Tue, 21 Jul 2015 04:00:14 +0000 (UTC)
Subject: [Python.NET] Getting an open Python file handle into CLR
Message-ID: <loom.20150721T054723-127@post.gmane.org>

Hi,
I posted this on StackOverflow but thought it might be a better question 
for this mailing list.

http://stackoverflow.com/questions/31530059/how-can-i-open-a-net-
filestream-object-from-a-python-file-handle

I'm trying to figure out how to transform an open Python file handle 
into a System.IO.FileStream object so that I can pass it to C# code.

Here's what I've got so far. This produces the good ol' win32 (HANDLE*) 
object, I believe:

import clr, msvcrt
from Microsoft.Win32.SafeHandles import SafeFileHandle
from System.IO import FileStream, FileAccess
from System import IntPtr, Int32, Int64

pyf=open("c:/temp/testing123.txt","w")
fileno=pyf.fileno()
print fileno               # 6
handle = msvcrt.get_osfhandle(fileno)
print handle               # 1832L

Unfortunately, I can't figure out how to convince the clr module to cast 
this handle into something that I can use as an IntPtr, as required by 
the constructors of FileStream or SafeFileHandle.

I've tried various versions of the following, but they all give me 
TypeError ("value cannot be converted to System.IntPtr"):

FileStream(IntPtr(handle), True)
FileStream(IntPtr(Int32(handle), True)
SafeFileHandle(IntPtr(handle), True)

Thanks,
Dan Lenski


From rharding64 at yahoo.com  Tue Jul 21 06:19:56 2015
From: rharding64 at yahoo.com (Ron Harding)
Date: Tue, 21 Jul 2015 04:19:56 +0000 (UTC)
Subject: [Python.NET] Getting an open Python file handle into CLR
In-Reply-To: <loom.20150721T054723-127@post.gmane.org>
References: <loom.20150721T054723-127@post.gmane.org>
Message-ID: <1857701942.1607019.1437452396847.JavaMail.yahoo@mail.yahoo.com>

perhaps re-directed command line calls for stdin, stdout, stderr in c# interacting with python i/o command line calls(although in python it is common practice to daisy chain commands).
i have used this many times to get out of scrapes for 3rd party process calls in c#.?
good luck!
Ron??The desire that guides me in all I do is the desire to harness the forces of nature to the service of mankind.
?Nikola Tesla?Radio Power Will Revolutionize the World? (Modern Mechanix & Inventions, July, 1934) 


     On Monday, July 20, 2015 9:05 PM, Dan Lenski <dlenski at gmail.com> wrote:
   

 Hi,
I posted this on StackOverflow but thought it might be a better question 
for this mailing list.

http://stackoverflow.com/questions/31530059/how-can-i-open-a-net-
filestream-object-from-a-python-file-handle

I'm trying to figure out how to transform an open Python file handle 
into a System.IO.FileStream object so that I can pass it to C# code.

Here's what I've got so far. This produces the good ol' win32 (HANDLE*) 
object, I believe:

import clr, msvcrt
from Microsoft.Win32.SafeHandles import SafeFileHandle
from System.IO import FileStream, FileAccess
from System import IntPtr, Int32, Int64

pyf=open("c:/temp/testing123.txt","w")
fileno=pyf.fileno()
print fileno? ? ? ? ? ? ? # 6
handle = msvcrt.get_osfhandle(fileno)
print handle? ? ? ? ? ? ? # 1832L

Unfortunately, I can't figure out how to convince the clr module to cast 
this handle into something that I can use as an IntPtr, as required by 
the constructors of FileStream or SafeFileHandle.

I've tried various versions of the following, but they all give me 
TypeError ("value cannot be converted to System.IntPtr"):

FileStream(IntPtr(handle), True)
FileStream(IntPtr(Int32(handle), True)
SafeFileHandle(IntPtr(handle), True)

Thanks,
Dan Lenski

_________________________________________________
Python.NET mailing list - PythonDotNet at python.org
https://mail.python.org/mailman/listinfo/pythondotnet


  
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From dlenski at gmail.com  Tue Jul 21 20:12:37 2015
From: dlenski at gmail.com (Dan Lenski)
Date: Tue, 21 Jul 2015 18:12:37 +0000 (UTC)
Subject: [Python.NET] Getting an open Python file handle into CLR
References: <loom.20150721T054723-127@post.gmane.org>
 <1857701942.1607019.1437452396847.JavaMail.yahoo@mail.yahoo.com>
Message-ID: <loom.20150721T200933-111@post.gmane.org>

Ron Harding via PythonDotNet <pythondotnet at ...> writes:

> perhaps re-directed command line calls for stdin, stdout, stderr in c# 
interacting with python i/o command line calls(although in python it is 
common practice to daisy chain commands).

Unfortunately, I cannot redirect the output of the C# library to a 
convenient filehandle like stdout/stderr; I need to be specify a 
FileStream object.

It pretty much comes down to this: how do I cast a win32 file handle to an 
IntPtr?

Thanks,
Dan


From rharding64 at yahoo.com  Tue Jul 21 21:28:17 2015
From: rharding64 at yahoo.com (Ron Harding)
Date: Tue, 21 Jul 2015 19:28:17 +0000 (UTC)
Subject: [Python.NET] Getting an open Python file handle into CLR
In-Reply-To: <loom.20150721T200933-111@post.gmane.org>
References: <loom.20150721T200933-111@post.gmane.org>
Message-ID: <976775015.2132890.1437506897205.JavaMail.yahoo@mail.yahoo.com>

>how do I cast a win32 file handle to an?IntPtr?

i ran into this in the past as well; specifically when i started using FTDI USB devices on DLPdesign development kits. ?the library is written in c++ MFC code. ?After providing data marshal/platform invoke i applied the intptr in c#. ? The USB device that I am accessing, passes a file handle to indicate specific pass / fail condition. ?i.e. the first command opens a connection to the device, the expected handle is 'OK'. ?if not one of many different possible error messages is passed in the file handle. ?

SummaryOpen the device and return a handle which will be used for subsequent accesses.DefinitionFT_STATUS FT_Open (int iDevice, FT_HANDLE *ftHandle)ParametersiDevice Index of the device to open. Indices are 0 based.ftHandle Pointer to a variable of type FT_HANDLE where the handle will bestored. This handle must be used to access the device.Return ValueFT_OK if successful, otherwise the return value is an FT error code.
public class Wrapper{private static IntPtr m_USBhandler;
[DllImport("FTD2XX.dll", EntryPoint="FT_Open")]public static extern uint FT_Open(int iDevice, ref IntPtr ftHandle);
[DllImport("FTD2XX.dll", EntryPoint="FT_Close")]public static extern uint FT_Close(IntPtr ftHandle);
[DllImport("FTD2XX.dll", EntryPoint="FT_Read")]public static extern uint FT_Read(IntPtr ftHandle, byte[] lpBuffer,uint dwBytesToRead, ref uintlpdwBytesReturned);
[DllImport("FTD2XX.dll", EntryPoint="FT_Write")]public static extern uint FT_Write(IntPtr ftHandle, byte[] lpBuffer,uint dwBytesToWrite, ref uintlpdwBytesWritten);
[DllImport("FTD2XX.dll", EntryPoint="FT_Purge")]public static extern uint FT_Purge(IntPtr ftHandle, uint dwMask);
public static bool OpenDevice(){if (((FT_Status)Wrapper.FT_Open(1, ref m_USBhandler)) ==FT_Status.Ok){return true;}else{return false;}}

i hope this helps you by seeing one way of applying file handles in c#.?
Ron???The desire that guides me in all I do is the desire to harness the forces of nature to the service of mankind.?Nikola Tesla?Radio Power Will Revolutionize the World? (Modern Mechanix & Inventions, July, 1934) 


     On Tuesday, July 21, 2015 11:12 AM, Dan Lenski <dlenski at gmail.com> wrote:
   

 Ron Harding via PythonDotNet <pythondotnet at ...> writes:

> perhaps re-directed command line calls for stdin, stdout, stderr in c# 
interacting with python i/o command line calls(although in python it is 
common practice to daisy chain commands).

Unfortunately, I cannot redirect the output of the C# library to a 
convenient filehandle like stdout/stderr; I need to be specify a 
FileStream object.

It pretty much comes down to this: how do I cast a win32 file handle to an 
IntPtr?

Thanks,
Dan

_________________________________________________
Python.NET mailing list - PythonDotNet at python.org
https://mail.python.org/mailman/listinfo/pythondotnet


  
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From jeff at coderforlife.com  Tue Jul 21 19:53:50 2015
From: jeff at coderforlife.com (Jeffrey Bush)
Date: Tue, 21 Jul 2015 10:53:50 -0700
Subject: [Python.NET] Getting an open Python file handle into CLR
In-Reply-To: <1857701942.1607019.1437452396847.JavaMail.yahoo@mail.yahoo.com>
References: <loom.20150721T054723-127@post.gmane.org>
 <1857701942.1607019.1437452396847.JavaMail.yahoo@mail.yahoo.com>
Message-ID: <CALOUSf=gYgONjd3=MjP+XU0UCOQHC5nqLhRB58yhxG3MyXDWgg@mail.gmail.com>

The problem is the conversion from a Python long to a C# number, not
anything to do with the file handle itself.

This worked for me: (after your "print handle")

cs_handle = IntPtr.Overloads[Int64](Int64(handle))
fs = FileStream(cs_handle, True)


Jeff

On Mon, Jul 20, 2015 at 9:19 PM, Ron Harding via PythonDotNet <
pythondotnet at python.org> wrote:

> perhaps re-directed command line calls for stdin, stdout, stderr in c#
> interacting with python i/o command line calls(although in python it is
> common practice to daisy chain commands).
>
> i have used this many times to get out of scrapes for 3rd party process
> calls in c#.
>
> good luck!
>
> Ron
>
> ?The desire that guides me in all I do is the desire to harness the forces
> of nature to the service of mankind.
>
> ?Nikola Tesla?Radio Power Will Revolutionize the World? (Modern Mechanix &
> Inventions, July, 1934)
>
>
>
>   On Monday, July 20, 2015 9:05 PM, Dan Lenski <dlenski at gmail.com> wrote:
>
>
> Hi,
> I posted this on StackOverflow but thought it might be a better question
> for this mailing list.
>
> http://stackoverflow.com/questions/31530059/how-can-i-open-a-net-
> filestream-object-from-a-python-file-handle
>
> I'm trying to figure out how to transform an open Python file handle
> into a System.IO.FileStream object so that I can pass it to C# code.
>
> Here's what I've got so far. This produces the good ol' win32 (HANDLE*)
> object, I believe:
>
> import clr, msvcrt
> from Microsoft.Win32.SafeHandles import SafeFileHandle
> from System.IO import FileStream, FileAccess
> from System import IntPtr, Int32, Int64
>
> pyf=open("c:/temp/testing123.txt","w")
> fileno=pyf.fileno()
> print fileno              # 6
> handle = msvcrt.get_osfhandle(fileno)
> print handle              # 1832L
>
> Unfortunately, I can't figure out how to convince the clr module to cast
> this handle into something that I can use as an IntPtr, as required by
> the constructors of FileStream or SafeFileHandle.
>
> I've tried various versions of the following, but they all give me
> TypeError ("value cannot be converted to System.IntPtr"):
>
> FileStream(IntPtr(handle), True)
> FileStream(IntPtr(Int32(handle), True)
> SafeFileHandle(IntPtr(handle), True)
>
> Thanks,
> Dan Lenski
>
> _________________________________________________
> Python.NET mailing list - PythonDotNet at python.org
> https://mail.python.org/mailman/listinfo/pythondotnet
>
>
>
> _________________________________________________
> Python.NET mailing list - PythonDotNet at python.org
> https://mail.python.org/mailman/listinfo/pythondotnet
>
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From jeff at coderforlife.com  Tue Jul 21 21:31:17 2015
From: jeff at coderforlife.com (Jeffrey Bush)
Date: Tue, 21 Jul 2015 12:31:17 -0700
Subject: [Python.NET] Getting an open Python file handle into CLR
In-Reply-To: <loom.20150721T200933-111@post.gmane.org>
References: <loom.20150721T054723-127@post.gmane.org>
 <1857701942.1607019.1437452396847.JavaMail.yahoo@mail.yahoo.com>
 <loom.20150721T200933-111@post.gmane.org>
Message-ID: <CALOUSf=GB1jag_Nia5m6N9hJFidBHs3ivPSf2VQCabancF1RBA@mail.gmail.com>

As I said in my message, you can using IntPtr.Overloads[Int64](handle).

Jeff

On Tue, Jul 21, 2015 at 11:12 AM, Dan Lenski <dlenski at gmail.com> wrote:

> Ron Harding via PythonDotNet <pythondotnet at ...> writes:
>
> > perhaps re-directed command line calls for stdin, stdout, stderr in c#
> interacting with python i/o command line calls(although in python it is
> common practice to daisy chain commands).
>
> Unfortunately, I cannot redirect the output of the C# library to a
> convenient filehandle like stdout/stderr; I need to be specify a
> FileStream object.
>
> It pretty much comes down to this: how do I cast a win32 file handle to an
> IntPtr?
>
> Thanks,
> Dan
>
> _________________________________________________
> Python.NET mailing list - PythonDotNet at python.org
> https://mail.python.org/mailman/listinfo/pythondotnet
>
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From dlenski at gmail.com  Wed Jul 22 00:54:50 2015
From: dlenski at gmail.com (Dan Lenski)
Date: Tue, 21 Jul 2015 22:54:50 +0000 (UTC)
Subject: [Python.NET] Getting an open Python file handle into CLR
References: <loom.20150721T054723-127@post.gmane.org>
 <1857701942.1607019.1437452396847.JavaMail.yahoo@mail.yahoo.com>
 <CALOUSf=gYgONjd3=MjP+XU0UCOQHC5nqLhRB58yhxG3MyXDWgg@mail.gmail.com>
Message-ID: <loom.20150722T005326-651@post.gmane.org>

Jeffrey Bush <jeff at ...> writes:

> 
> 
> The problem is the conversion from a Python long to a C# number, not 
anything to do with the file handle itself.
> This worked for me: (after your "print handle")
> 
> 
> cs_handle = IntPtr.Overloads[Int64](Int64(handle))
> fs = FileStream(cs_handle, True)
> 

Aha, thanks you very much!

Looks like "Overloads" is the missing ingredient for C-style casting. I 
see now that that is in the docs, but I had overlooked it.

Dan