Recently I messed up my steady environment by installing multiple versions of python.
What I'm trying to do: install a particular package using pip
pip cannot install any package without the --user tag
Could not install packages due to an EnvironmentError: [Errno 13 Permission denied: '/Library/Python/2.7/site-packages/PIL
Here's More information:
which pip
/usr/local/bin/pip
which python
/usr/bin/python
What should I do?