[Tutor] Fw: getting python 3 to run from the command line (version 2)
ALAN GAULD
alan.gauld at btinternet.com
Sun Nov 15 20:31:37 CET 2009
Forwarding to the tutor list with cut n paste sessions.
It looks to me like the code page issue somebody else
referred to is the problem but the behaviour seems a
bit extreme, I'd have thought it might have chosen
a default value or something...
But I'm not sure what causes it to select cp720 in
the first place. Where does Py_Initialize get its values?
Are they set in the environment somewhere?
And why is 2.6 OK? I know 3.0 did some changes around
locale handling but I can't recall what they were.
I assume this is a side effect of those changes?
Alan Gauld
Author of the Learn To Program website
http://www.alan-g.me.uk/
----- Forwarded Message ----
From: Khalid Al-Ghamdi <emailkgnow at gmail.com>
To: ALAN GAULD <alan.gauld at btinternet.com>
Sent: Sunday, 15 November, 2009 18:02:25
Subject: Re: [Tutor] getting python 3 to run from the command line (version 2)
Hi,
I'm really sorry for this hassle!
Python31 (gives error):
C:\Users\KE>python
Fatal Python error: Py_Initialize: can't initialize sys standard streams
LookupError: unknown encoding: cp720
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
C:\Users\KE>cd c:\python31
c:\Python31>python
Fatal Python error: Py_Initialize: can't initialize sys standard streams
LookupError: unknown encoding: cp720
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
Python30 (doesn't respond):
c:\Python31>cd c:\python30
c:\Python30>python
Python 3.0.1 (r301:69561, Feb 13 2009, 20:04:18) [MSC v.1500 32 bit (Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> 2+2
>>>
Python26(works ok):
C:\Users\KE>cd c:\python26
c:\Python26>python
Python 2.6.1 (r261:67517, Dec 4 2008, 16:51:00) [MSC v.1500 32 bit (Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> 2+2
4
>>>
Thanks very much
On Sun, Nov 15, 2009 at 8:16 PM, ALAN GAULD <alan.gauld at btinternet.com> wrote:
Unfortunately the image didn't get to me.
>
>
>To copy/paste from a cmd window click the small icon
>at the left hand end of the title bar.
>
>
>From that select Edit->Mark
>Use the mouse to select the text you want to copy
>Use the menu again to do Edit->Copy
>
>
>Now paste into your mail program.
>
>
>You can make this easier by opening the properties
>dialog from the same menu, and on the Options tag
>tick QuickEdit. This will allow you to select with
>the mouse and copy by hitting return after selecting.
>
>
>This is very useful when sending python examples
>to the
> tutor list! :-)
>
>
>
>Alan Gauld
>Author of the Learn To Program website
>
>http://www.alan-g.me.uk/
>
>
>
>
>
>
________________________________
From: Khalid Al-Ghamdi <emailkgnow at gmail.com>
>To: Alan Gauld <alan.gauld at btinternet.com>
>Sent: Sunday, 15 November, 2009 7:11:06
>Subject: Re: [Tutor] getting python 3 to run from the command line (version 2)
>
>
>
>Hi Alan,
>
>
>this is how the problem looks from
> my work pc (which is xp. at home i use vista). and yes i don't know how copy and paste from the cmd so here is an image:
>
>
>
>
>
>
>
>As you can see when I try to access python31 it gives me the error above. When I use python 26 it works fine.
>Now, I don't have python30 installed at my work PC, but what happens is when I enter c:\python30\python it initiates and gives me a blank prompt(>>>) then when i enter something (2+2 for example) it returns (>>>) as if i just pressed enter without entering any code. It just doesn't process the code for me.
>
>
>I hope you can be of help.
>
>
>thanks
>
>
>On Sat, Nov 14, 2009 at 9:56 PM, Alan Gauld <alan.gauld at btinternet.com> wrote:
>
>
>>>>"Khalid Al-Ghamdi" <emailkgnow at gmail.com> wrote
>>
>>
>>
>>>>>when i try to code something it just gives me a new line without any
>>>>>>processing of the code. (for example:2+2 returns a new line)
>>>
>>
>>You mean you get to the >>> prompt?
>>>>And you type 2+2 you get this:
>>
>>
>>>>>>>
>>>>>
>>>>>
>>>>>
>>>>>2+2
>>>>>
>>
>>>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>With just a newline between your input and the next >>> prompt?
>>
>>
>>>>>when I tried to change the path to the directory that contains python 31 and
>>>
>>>enter *python (c:\python31>)*,
>>>
>>>>I'm not surprised it doesn't work, that should have python trying to start
>>>>executing a folder. But....
>>
>>
>>>>>*fatal python error: Py_Initialize: can't initialize sys standard streams
>>>
>>>>I get a very different message:
>>
>>>>C:\Documents and Settings\Alan Gauld>python (C:\Python31)
>>>>python: can't open file '(C:\Python31)': [Errno 22] Invalid argument
>>
>>
>>
>>>>>When i change the directory to c:\python26 and then enter it works ok.
>>>>>>so can anyone tell me why this is happening?
>>>
>>
>>Nope, sorry, I don't understand how the 2.6 version works if
>>>>you are passing in a folder as you did for 3.1
>>
>>>>Do you know how to cut n paste from a cmd window>
>>>>It would probably help if you pasted in the actuall sessions
>>>>into your mail.
>>
>>>>HTH,
>>
>>
>>>>--
>>>>Alan Gauld
>>
>>>>Author of the Learn to Program web site
>>http://www.alan-g.me.uk/
>>
>>
>>>>_______________________________________________
>>>>Tutor maillist - Tutor at python.org
>>>>To unsubscribe or change subscription options:
>>http://mail.python.org/mailman/listinfo/tutor
>>
>
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