conflict between multiple installs of python (linux)

catalinfest at gmail.com catalinfest at gmail.com
Sun Jul 6 13:35:25 CEST 2008


Is some problems with 2.5 i see something on internet (ex: ctypes )
So i try to install 2.5.1 for pyglet1.1, but not work with ctypes .
So ctypes lib is on the path lib's !?
But python2.6 work with ctypes.
The python2.5 and 2.6 have been installed with same command:
python setup.py install
If you see my code :

 python2.5
Python 2.5.1 (r251:54863, Jul  4 2008, 14:55:17)
[GCC 4.3.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import ctypes
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.5/ctypes/__init__.py", line 10, in
<module>
    from _ctypes import Union, Structure, Array
ImportError: No module named _ctypes
>>> import pyglet
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.5/site-packages/pyglet/__init__.py",
line 69, in <module>
    _require_ctypes_version('1.0.0')
  File "/usr/local/lib/python2.5/site-packages/pyglet/__init__.py",
line 64, in _require_ctypes_version
    import ctypes
  File "/usr/local/lib/python2.5/ctypes/__init__.py", line 10, in
<module>
    from _ctypes import Union, Structure, Array
ImportError: No module named _ctypes
>>>

python (default python )
Python 2.6b1 (r26b1:64398, Jul  4 2008, 15:57:20)
[GCC 4.3.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import ctypes
>>> import pyglet
>>> print pyglet.version
1.1beta2
>>>


Try python 2.6
To see the path this is some code:

import sys
print sys.path
print sys.prefix
print sys.prefix

Have a nice day !

On Jul 5, 10:04 pm, casevh <cas... at gmail.com> wrote:
> On Jul 5, 11:09 am, david <dgel... at gmail.com> wrote:
>
>
>
> > You learn something new every day:
>
> > On my ubuntu, update-manager is supposed to use the python2.5
> > installed on /usr/bin. Well, I had subsequently installed a whole
> > bunch of stuff in /usr/local (/usr/local/bin/python and /usr/local/lib/
> > python2.5 etc), which I have happily been using for development for a
> > year. I had thought that the two pythons were completely independent.
>
> > Well, I was wrong. When /usr/bin/python2.5 runs, *by default*, it
> > adds /usr/local/lib/python2.5 to its sys path - and apparently there
> > are things in /usr/local which are inconsistent with those at /usr
> > (not suprising).
>
> > I have fixed the problem - but I had to modify the actual update-
> > manager .py file itself. At the beginning, I set the sys.path in
> > python *explicitly* to not include the /usr/local stuff.
>
> > But this is clearly a kludge. My question: how do I keep the Ubuntu
> > python stuff at /usr/bin/python2.5 from adding /usr/local/lib/
> > python2.5 to the import search path in a clean and global way? I
> > really want both pythons completely isolated from one another!
>
> > Thankyou.
>
> Python's path is build by site.py. In the file /usr/lib/python2.5/
> site.py, look for the line "prefixes.insert(0, '/usr/local')" and
> comment it out. That should do it.
>
> casevh




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