Getting the following output from running this:
ps aux | grep Python
user_name 84487 0.0 0.0 0 0 ?? Z 12:15PM 0:00.00 (Python) user_name 84535 0.0 0.0 0 0 ?? Z 12:16PM 0:00.00 (Python)
use pkill, with the -f option.
-f
pkill -f python
If you don't have pkill pre-installed (some osx's don't...), try proctools.
pkill