Add to python path mac os x

python macos add pythonpath
MacPython picture MacPython · Aug 2, 2010 · Viewed 236.1k times · Source

I thought

import sys
sys.path.append("/home/me/mydir")

is appending a dir to my pythonpath

if I print sys.path my dir is in there.

Then I open a new command and it is not there anymore.

But somehow Python cant import modules I saved in that dir.

What Am I doing wrong?

I read .profile or .bash_profile will do the trick.

Do I have to add: 

PATH="/Me//Documents/mydir:$PYTHONPATH"
export PATH

To make it work?

Answer

Matthew Flaschen picture Matthew Flaschen · Aug 2, 2010

Modifications to sys.path only apply for the life of that Python interpreter. If you want to do it permanently you need to modify the PYTHONPATH environment variable:

PYTHONPATH="/Me/Documents/mydir:$PYTHONPATH"
export PYTHONPATH

Note that PATH is the system path for executables, which is completely separate.

**You can write the above in ~/.bash_profile and the source it using source ~/.bash_profile

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