OS X install confusion

7stud bbxx789_05ss at yahoo.com
Fri Jun 15 09:05:15 CEST 2007


On Jun 14, 6:25 pm, Paul McNett <p... at ulmcnett.com> wrote:
> John Fisher wrote:
> > Ted <tedlan... at gmail.com> wrote:
>
> >> On Jun 14, 1:31 pm, Kevin Walzer <k... at codebykevin.com> wrote:
> >>> John Fisher wrote:
> >>>> Hi Groupies,
> >>>> I have an Intel Macbook running OS X 10.4.
> >>>> It came installed with Python 2.3.5. I have since installed MacPython
> >>>> with version 2.4.4, cool.
> >>>> When I open a bash terminal session and type python, it brings up
> >>>> version 2.3.5. If I type IDLE it brings up version 2.4.4.
> >>>> My question: what do I have to do to get it to bring up 2.4.4 with the
> >>>> "python" command?
> >>>> Thanks for bringing light to my ignorance.
> >>>> JF
> >>> Sounds like a path problem. Apple's system Python is installed in
> >>> /usr/bin. Your installation is probably in /usr/local/bin. Edit your
> >>> profile or use the full path.
>
> >>> --
> >>> Kevin Walzer
> >>> Code by Kevinhttp://www.codebykevin.com
> >> The default python on tiger (2.3.5) is sym-linked to /usr/bin/python
> >> and /usr/bin/pythonw.
>
> >> I found it easier to relink to the new installation path. This also
> >> leaves /usr/bin/python23 and /usr/bin/pythonw23 still linked to the
> >> original version if you want to quickly check something.
>
> >> Cheers,
> >> Ted
>
> > OK, please give a little more information how I can accomplish this
> > "re-link".
>
> Your Python 2.5 is likely installed here:
>
> /Library/Frameworks/Python.framework/Versions/Current/bin
>
> But OS X comes with a "system Python", version 2.3.5, likely installed here:
>
> /usr/bin
>
> If you look at /usr/bin, you'll see:
>
> lrwxr-xr-x   1 root  wheel      9 Jan 31 17:24 python -> python2.3
> lrwxr-xr-x   1 root  wheel     72 Jan 31 17:24 python2.3 ->
> ../../System/Library/Frameworks/Python.framework/Versions/2.3/bin/python
> lrwxr-xr-x   1 root  wheel     10 Jan 31 17:24 pythonw -> pythonw2.3
> -rwxr-xr-x   1 root  wheel  29704 Aug 19  2006 pythonw2.3
>
> So, python is linked to python2.3, and python2.3 is in turn linked to
> /System/Library/Frameworks/Python.framework/Versions/2.3/bin/python
>
> You need to (warning: watch for line wrap):
>
> sudo -s
> <enter your password>
> cd /usr/bin
> ln -s /Library/Frameworks/Python.framework/Versions/Current/bin/python
> python_current
> ln -s /Library/Frameworks/Python.framework/Versions/Current/bin/pythonw
> pythonw_current
> rm python
> rm pythonw
> ln -s python python_current
> ln -s pythonw pythonw_current
>
> However, that isn't what I did. I like the system being able to find and
> use the system-installed python, but I like my scripts to use the python
> version I installed (2.5). To get that, skip the above symlinking and
> instead edit your .bash_profile file (hidden file inside your home
> directory) and put these lines at the top:
>
> PATH="/Library/Frameworks/Python.framework/Versions/Current/bin:${PATH}
> export PATH
>
> --
> pkm ~http://paulmcnett.com

When I installed macpython 2.4.4, I think the install automatically
changed the file: Users/me/.bash_profile.  Here is what is says at the
bottom of .bash_profile:

# Setting PATH for MacPython 2.5 (these lines added by install)
# The orginal version is saved in .bash_profile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/Current/bin:$
{PATH}"
export PATH


(Note I installed macpython 2.4.4 but the comment says something about
python 2.5.)

Ahh, I think I know what happened to the op's install.  I don't think
imacs come with the file: Users/me/.bash_profile.  I had previously
created the .bash_profile file in order to alter the bash prompt, so
when I installed macpython 2.4.4, the install modified the pre-
existing .bash_profile file and added the lines listed above.  I bet
the op didn't have a .bash_profile file on his system, so the install
didn't make the path changes for him/her.




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