How to launch python-mode on a buffer with vim?

Question

I've just installed python-mode for my Vim, but I can't figure out how to run it on an open buffer, without saving the buffer as a .py file. Only way I can run python-mode seems to be by opening a .py file.

Answer 1

:set filetype=python

This will tell Vim to treat the buffer as if it were a Python file.