[Pythonmac-SIG] Status of Python 3.0 for Mac?

[Dav Clark]

For completeness / clarity, you simply CAN'T build VTK bindings from  
the stock sources targeting the system python if you have ANY  
Frameworks installed.  You can modify some of the build scripts and  
get a successful install, however.  I would not be surprised if this  
happened in other complex libs.

Cheers,
Dav

On Dec 16, 2008, at 9:10 AM, Conan C. Albrecht wrote:

> You are all right in correcting me.  Here's a revised version of  
> what to have to make multiple versions work:
>
> If I type ls -l /usr/local/bin, I get the following in the list:
>
> lrwxr-xr-x  1 root  wheel      72 Dec 16 10:05 python -> ../../../ 
> Library/Frameworks/Python.framework/Versions/Current/bin/python
> lrwxr-xr-x  1 root  wheel      71 Dec 16 10:05 pydoc -> ../../../ 
> Library/Frameworks/Python.framework/Versions/Current/bin/pydoc
> lrwxr-xr-x  1 root  wheel      79 Dec 16 10:05 python-config - 
> > ../../../Library/Frameworks/Python.framework/Versions/Current/bin/ 
> python-config
> lrwxr-xr-x  1 root  wheel      73 Dec 16 10:05 pythonw -> ../../../ 
> Library/Frameworks/Python.framework/Versions/Current/bin/pythonw
>
> Note that they all go to the "Current" version.  Then, in the / 
> Library/Frameworks/Python.framework/Versions directory, I have:
>
> drwxrwxr-x  10 root  admin  340 Oct  1 17:52 2.6
> drwxr-xr-x   9 root  admin  306 Dec  9 14:01 3.0
> lrwxr-xr-x   1 root  admin    3 Dec 16 10:06 Current -> 2.6
>
> Note that Current goes to 2.6.  To switch the "active" version of  
> Python, just switch the symlink from 2.6 to 3.0.  That should switch  
> the system.
>
> ____________________________________
> Conan C. Albrecht, Ph.D.
> Information Systems Department
> Brigham Young University
> Email: conan at warp.byu.edu
> Phone: +1-801-805-1615
> Web/Blog: http://warp.byu.edu/
>
> On Dec 15, 2008, at 17:33, Christopher Barker wrote:
>
>> Dav Clark wrote:
>>>> It's easy to have two or three Python installations.  They all  
>>>> sit in different directories and don't mess with each other.
>>> Not entirely true.  For example, anything that compiles against  
>>> python with a bare "-framework Python" flag will grab the (I  
>>> think) Current dir from /Library/Frameworks/Python.framework/ 
>>> Versions
>>
>> True, but "Current" is just a symlink to a particular version -  
>> it's easy to put it back -- that's what I've done with 2.6 -- it's  
>> installed, but not set as current.
>>
>> -Chris
>>
>>
>>
>> -- 
>> Christopher Barker, Ph.D.
>> Oceanographer
>>
>> Emergency Response Division
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>>
>> Chris.Barker at noaa.gov
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>
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