MacOS – What version(s) of Python are pre-installed on OS X 10.9 Mavericks

Install of python modules goes in x/Library/FrameworksPython.framework/Versions/2.6 etc where x depends on the install.

nothing for the one from Apple as port of OSX. python executable in /usr/bin

nothing for pythons from python.org. python executable in /usr/local/bin

/opt/local if installed via macports (as I do)

You have to look at easy_install etc to see the path to the python they use. e.g. /usr/bin/easy_install has /usr/bin/python so using this will install in /Library/FrameworksPython.framework/Versions/2.6.

You cannot choose to run under a minor version of python e.g. 2.7.2 as only one major version at a time is set up normally e.g. 2.7.2 replaced 2.7.1 Each major version of python will have its own executable e.g. python2.7 s to have a script use that verstio make it begin with #!/usr/bin/env python2.7 pr the full path.

I think you probably have two options, barring a reinstallation of 2.7, which might be the easiest thing to do.

You can include the following first line in every Python script:

#!/usr/local/bin/python2.6

Change the path to reflect the version and location of the Python you would like to use.

Alternately you could create a bash alias like:

alias python = '/path/to/pythonversion'

I would go with the first version myself.