[Pythonmac-SIG] working around versions

[David Worrall]

Thanks for your reply Ronald.
I do run multiple versions, but I change the symlink of Current.
Do you mean because people change versions in other ways, say through  
a shell alias rather than change the symlink?
I can see that the sys.prefix approach is safer.
thanks,

David
On 06/11/2007, at 1:37 AM, Ronald Oussoren wrote:

>
> On 5 Nov, 2007, at 3:51, David Worrall wrote:
>
>> Hi All,
>>
>> We're doing some work around different versions of Python on OSX (and
>> what's in their respective site-packages directory),
>> and I was wondering:
>>
>> Given that we can pick up the the version number of the current
>> instantiation using sys.version,
>> is there a direct way of computing the locating values for x and y in
>> '/Library/Frameworks/Python.framework/Versions/Current/lib/ 
>> pythonx.y/'
>>
>> other than through concatenating the above string with a splice of
>> sys.version?
>
> No.
>
> BTW. The library location is os.path.join(sys.prefix, 'lib', 'python 
> %d.%d'%(sys.version_info[:2])).  This should resolve to a path that  
> doesn't refer to 'Versions/Current' but to 'Versions/x.y'.  Do not  
> assume that the 'Current' link will point to   currently running  
> version of Python, a user might have installed multiple versions of  
> python.
>
> Ronald
>>
>>
>> thanks,
>>
>> David
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>>
>>
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experimental polymedia:	www.avatar.com.au
Sonic Communications Research Group,
University of Canberra:	 creative.canberra.edu.au/scrg/