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Asked: 2026-05-27T00:26:54+00:00

When I enter: port select –list python This is the result: Available versions for

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When I enter: 

port select --list python

This is the result:

Available versions for python:
    none
    python25 (active)
    python25-apple
    python26-apple
    python27
    python27-apple

I thought when I use python I would be using version 2.5. Instead when I enter “python”, version 2.7 seems to be active. How do I change that to version 2.5?

Python 2.7.1 (r271:86832, Jun 16 2011, 16:59:05) 
[GCC 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.15.00)] on darwin
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1 Answer

  1. Editorial Team

    Why this happens

    MacPorts installs binaries into /opt/local by default.

    There is also a preinstalled python on your Mac. When just typing python to start, it will start the preinstalled python version not affected by MacPorts install.

    To see what version will be executed when just typing python use

    which python

    To start the mac ports version use

    /opt/local/bin/python2.5

    Solution

    If you wish to always use MacPorts binaries you can change your path so that /opt/local/bin appears before /use/local/bin etc.

    /opt/local/bin etc. are added in ~/.tcshrc by MacPorts. Also be sure to look in ~/.profile and ~/.bash_profile as these are default on mac.

    Selecting version in ports

    First type port select --list python to list installed version, then just for example sudo port select --set python python27 to select 2.7. For more information type port help select.

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