[Tutor] VPYTHON (Emile van Sebille)
Osemeka Osuagwu
abasiemeka at gmail.com
Wed Jul 4 22:38:39 CEST 2012
Hi Emile,
Re-install your vpython and make sure you select ''C:\Python32'' as install
location and not ''C:\Python32\New Folder'' or any other.
Cheers,
Abasiemeka
On Wed, Jul 4, 2012 at 5:57 PM, <tutor-request at python.org> wrote:
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> Today's Topics:
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> 1. Re: VPYTHON (Emile van Sebille)
> 2. Re: Passing numeral result of a defined function to a named
> value (Emile van Sebille)
> 3. Re: for loop question (Emile van Sebille)
> 4. Bothersome NoneType Error for a List object (Osemeka Osuagwu)
> 5. Re: Bothersome NoneType Error for a List object (Steven D'Aprano)
> 6. Re: Seeking help with reading and writing files in Python
> (Alan Gauld)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 04 Jul 2012 07:53:14 -0700
> From: Emile van Sebille <emile at fenx.com>
> To: tutor at python.org
> Subject: Re: [Tutor] VPYTHON
> Message-ID: <jt1lfi$b59$1 at dough.gmane.org>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> On 6/27/2012 3:59 PM Prajwal Niraula said...
> > Hi,
> > I am trying to learn VPython for more interesting simulation. I
> > downloaded it from the website: www.vpython.org <http://www.vpython.org>
> > While I have Python 3.2.3 in my computer, and it seems no equivalent
> > version for vpython is available. Besides when installing I had problem
> > in which the installer would not recognise the location of python, even
> > though it is located at C:\Python32.
> > What should I be doing?
>
> Sign up for their mailing list at
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
> and ask them.
>
> Emile
>
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 04 Jul 2012 08:09:14 -0700
> From: Emile van Sebille <emile at fenx.com>
> To: tutor at python.org
> Subject: Re: [Tutor] Passing numeral result of a defined function to a
> named value
> Message-ID: <jt1mdi$knr$1 at dough.gmane.org>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> On 6/28/2012 11:51 PM Joseph Hines said...
> > Hello. Sorry to bother you, but I'm self-teaching myself python, and
> > having difficulty with a script I'm writing to auto-calc various derived
> > stats for a PnP game I am hosting soon.
> >
> > I need to pass a numeral result of a defined function to a "named" value
> > (not sure if that's what it's called)
> >
> > The offending segment of code is this:
> >
>
> ... and what's the offending error? (provide traceback details please)
>
> Do you mean to be defining a function within a try-except structure? As
> it stands you'll get a syntax error.
>
> You've likely got an indetation issue on the line before except.
>
> providing int_mod as some integer and reworking it to:
>
> XP_Per_Level_Base = 20-int_mod
> XP_Per_Level_Limit = 5
> try:
> def XP_Per_Level_Calc(XP_Per_Level_Base, XP_Per_Level_Limit):
> if XP_Per_Level_Base < XP_Per_Level_Limit:
> return XP_Per_Level_Limit
> else:
> return XP_Per_Level_Base
> except ValueError:
> print "Script B0RK3D, Link Shall Come to Town."
> print "send him a message at
> Link6746 at gmail.com<mailto:Link6746 at gmail.com>"
>
>
> XP_Per_Level = XP_Per_Level_Calc(XP_Per_Level_Base, XP_Per_Level_Limit)
>
> gets it going, dut all in all it looks to me like this is simply a max
> function and could be written more simply as:
> max(XP_Per_Level_Base,XP_Per_Level_Limit)
>
> Emile
>
>
> >
> > XP_Per_Level_Base = 20-int_mod
> > XP_Per_Level_Limit = 5
> > try:
> > def XP_Per_Level_Calc(XP_Per_Level_Base, XP_Per_Level_Limit):
> > if XP_Per_Level_Base < XP_Per_Level_Limit:
> > return XP_Per_Level_Limit
> > else:
> > return XP_Per_Level_Base
> > XP_Per_Level = XP_Per_Level_Calc(XP_Per_Level_Base,
> XP_Per_Level_Limit)
> > except ValueError:
> > print "Script B0RK3D, Link Shall Come to Town."
> > print "send him a message at Link6746 at gmail.com
> > <mailto:Link6746 at gmail.com>"
> >
> > #Calcs XP per Level#
> >
> >
> > If you need the whole script, I'd be glad to send it to you, just
> > promise me not to divulge too many details of it
> > (It's regarding a custom PnP system that I'm planning on releasing under
> > the Open Gaming License, and I'd prefer not to risk it becoming a
> > proprietary system for someone I don't know)
> >
> >
> >
> > _______________________________________________
> > Tutor maillist - Tutor at python.org
> > To unsubscribe or change subscription options:
> > http://mail.python.org/mailman/listinfo/tutor
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 04 Jul 2012 08:30:07 -0700
> From: Emile van Sebille <emile at fenx.com>
> To: tutor at python.org
> Subject: Re: [Tutor] for loop question
> Message-ID: <jt1nko$v1v$1 at dough.gmane.org>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> On 7/1/2012 2:50 PM Jim said...
> > Hello Friends,
> > I apologize for being such a bother. This problem has been evading me
> > all day. Can you please give me a hint as to why I cannot put the
> > variable UpperCaseSentence outside of the for loop?
> > I can do it in other instances but not in this one.
> > Thank you so much,
> > Jim
>
>
>
> You're not returning anything from fixCase -- change the final print to
> return and try it again.
>
> Emile
>
>
>
> >
> > #Main function.
> > def main():
> > mySentence = (input("Enter text."))
> > mySentenceList = mySentence.split('.')
> >
> > #Call fixCase function. Send it mySentenceList and receive result
> > #and stores result in variable named output.
> > output = fixCase(mySentenceList)
> > print(output)
> >
> > def fixCase(myList):
> > #Begin making a loop through the list, using a variable myString
> > for myString in range (len(myList)):
> > tempString = myList[myString] #Store in temporary variable.
> > myList[myString] = tempString[0:1].upper() +
> tempString[1:len(tempString)] #Replace with upper
> > UpperCaseSentence = (myList[myString])
> > print(UpperCaseSentence)
> >
> > #Call main function
> > main()
> >
>
>
>
> ------------------------------
>
> Message: 4
> Date: Wed, 4 Jul 2012 17:01:34 +0100
> From: Osemeka Osuagwu <abasiemeka at gmail.com>
> To: tutor at python.org
> Subject: [Tutor] Bothersome NoneType Error for a List object
> Message-ID:
> <
> CAF33E7ZaobiNfaG4+Lyg218q6o4HwAGorZMzVYBR-i19rWhAqw at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi,
> I am trying to find the smallest positive number that is divisible by all
> of the numbers from 1 to 20 without a remainder. I wrote the following code
> (implementation of a solution method found in
> http://en.wikipedia.org/wiki/Least_common_multiple#A_method_using_a_table)
> but kept getting an error message (also posted) when I ran it. I can't
> figure out the problem. I would appreciate help with this. Also, any hint
> on how to make the code more elegant is welcome.
>
> Regards,
> Abasiemeka
>
> *CODE*
> def checkdiv(x, testlist): #returns True if x can divide ANY member of
> testlist,returns False otherwise
> for k in testlist:
> if k%x == 0:
> return True
> return False
>
> def lcm(numlist): #continuously divides numlist by each in a
> list of prime numbers till cannot
> primeslist = [2, 3, 5, 7, 11]
> templist = []
>
> for prime in primeslist:
> if checkdiv(prime, numlist) == True:
> templist = templist.append(prime)
> for i in range(0,len(numlist)):
> if numlist[i]%prime == 0:
> numlist[i] = numlist[i]/prime
> else:
> pass
>
> lcm = reduce(lambda x, y: x*y, templist) #my first lambda
> expression! (multiply all members of templist
> return lcm
>
> print lcm([i for i in range(1, 21)])
>
> *ERROR OUTPUT*
> Traceback (most recent call last):
> File "C:\Windows.old\Users\Abasiemeka\Abasiemeka\GOOGLE
> University\Python\Python Code\MyCode\Project Euler code\Project Euler
> answer 5.py", line 31, in <module>
> print lcm(first20)
> File "C:\Windows.old\Users\Abasiemeka\Abasiemeka\GOOGLE
> University\Python\Python Code\MyCode\Project Euler code\Project Euler
> answer 5.py", line 20, in lcm
> templist = templist.append(prime)
> AttributeError: 'NoneType' object has no attribute 'append'
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> ------------------------------
>
> Message: 5
> Date: Thu, 05 Jul 2012 02:15:08 +1000
> From: Steven D'Aprano <steve at pearwood.info>
> To: tutor at python.org
> Subject: Re: [Tutor] Bothersome NoneType Error for a List object
> Message-ID: <4FF46C0C.4000509 at pearwood.info>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Osemeka Osuagwu wrote:
>
> > templist = templist.append(prime)
>
> The append method operates in place, and returns None. It doesn't return a
> list:
>
> py> mylist = []
> py> x = mylist.append(42)
> py> x is None
> True
> py> mylist
> [42]
>
> Replace that line with just
>
> templist.append(prime)
>
>
> --
> Steven
>
>
> ------------------------------
>
> Message: 6
> Date: Wed, 04 Jul 2012 17:56:51 +0100
> From: Alan Gauld <alan.gauld at btinternet.com>
> To: tutor at python.org
> Subject: Re: [Tutor] Seeking help with reading and writing files in
> Python
> Message-ID: <jt1skj$89p$1 at dough.gmane.org>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> On 26/06/12 19:28, Aristotle wrote:
>
> > with an assignment that asks me to read from one file and then write to
> > another file. The problem is that the file to read from has not been
> > created yet.
>
> So create it.
> Any old text editor will do.
> The whole point is, I believe that you are writing a program to read a
> file created by some other application, perhaps a web application or
> database reporting tool. (or in this case Notepad, say).
>
> How the file is created is irrelevant so long as it has the data that
> you want to extract within it.
>
> --
> Alan G
> Author of the Learn to Program web site
> http://www.alan-g.me.uk/
>
>
>
>
>
> ------------------------------
>
> _______________________________________________
> Tutor maillist - Tutor at python.org
> http://mail.python.org/mailman/listinfo/tutor
>
>
> End of Tutor Digest, Vol 101, Issue 11
> **************************************
>
--
*We have enough for our need but not enough for our greed.*
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