Both Python 2 and 3 in Emacs

Question

I have been using Emacs to write Python 2 code. Now I have both Python 2.6 and 3.0 installed on my system, and I need to write Python 3 code as well.

Here is how the

Answer 1

If you are using python-mode.el you can try to change py-which-shell. In order to do this on a per-file basis you can put

# -*- py-which-shell: "python3"; -*-

at the first line of your file - or at the second line if the first line starts with #!. Another choice is to put

# Local Variables:
# py-which-shell: "python3" 
# End: 

at the end of your file. Perhaps you should give the full path to python3 instead of just "python3".