Question

in Lion, have installed python 3.2.2 from python.org. It comes with a terminal command that is supposed to move this version of python earlier by updating my shell profile. When i run it, and then check my default python in Terminal, it still says 2.7.2 which is the Apple supplied one.

Do I need to run the command with sudo to get it to change the default python to 3.2.2?

I’ve also tried the VERSIONER method but it doesn’t work.

Answer 1

For Python 3 interpreters, you must enter python3 not python.

$ python -V
Python 2.7.2
$ python3 -V
Python 3.2.2

For more background on the current recommendation that python refer to a version of Python 2 and python3 refer to a version of Python 3, see the draft PEP 394 – The “python” Command on Unix-Like Systems.