Getting Python error “from: can't read /var/mail/Bio”

Question

I am running a (bio)python script which results in the following error:

from: can\'t read /var/mail/Bio

seeing as my script doesn\'t have a

Answer 1

Put this at the top of your .py file (for python 2.x)

#!/usr/bin/env python 

or for python 3.x

#!/usr/bin/env python3

This should look up the python environment, without it, it will execute the code as if it were not python code, but straight to the CLI. If you need to specify a manual location of python environment put

#!/#path/#to/#python