问题
I want to use the macports version of python instead of the one that comes with Leopard.
回答1:
I have both installed:
$ which python
/usr/bin/python
$ which python2.5
/opt/local/bin/python2.5
I also added the following line to my .profile:
export PATH=/opt/local/bin:/opt/local/sbin:$PATH
回答2:
Don't. Apple ships various system utilities that rely on the system Python (and particularly the Python "framework" build); removing it will cause you problems.
Instead, modify your PATH environ variable in your ~/.bash_profile to put /opt/local/bin first.
回答3:
Use the python_select port to switch python interpreters.
sudo port install python25
sudo port install python_select
sudo python_select python25
This will symlink /opt/local/bin/python to the selected version. Then export PATH as described above.
回答4:
python_select is now deprecated, use this instead:
sudo port select python python26
回答5:
Instead of uninstalling the built-in Python, install the MacPorts version and then modify your $PATH to have the MacPorts version first.
For example, if MacPorts installs /usr/local/bin/python, then modify your .bashrc to include PATH=/usr/local/bin:$PATH at the end.
回答6:
I wouldn't uninstall it since many scripts will expect python to be in the usual places when they do not follow convention and use #!/usr/bin/env python. You should simply edit your .profile or .bash_profile so the macports binaries are the first in your path.
Your .profile should have this line:
export PATH=/opt/local/bin:/opt/local/sbin:$PATH
If not, add it in, and now your shell will search macport's bin/ first, and should find macports python before system python.
回答7:
The current Macports installer does the .profile PATH modification automatically.
来源：https://stackoverflow.com/questions/118813/how-do-i-uninstall-python-from-osx-leopard-so-that-i-can-use-the-macports-versio