homebrew pip install jupyter error: ImportError: Entry point ('console_scripts', 'pip2') not found

问题

The end goal is to get jupyter notebook working on Mac OSX. Due to some conflicts with mac system python, I went the homebrew route:

brew install python

After homebrew is done installing python (and pip2)

export PATH=/usr/local/bin:/usr/local/sbin:$PATH is added to ~/.zshrc

source ~/.zshrc

Now running pip or pip2 gives the following error:

pip2 install jupyter

Traceback (most recent call last):
  File "/usr/local/bin/pip2", line 11, in <module>
    load_entry_point('pip==9.0.1', 'console_scripts', 'pip2')()
  File "/Users/user1/Library/Python/2.7/lib/python/site-packages/pkg_resources/__init__.py", line 564, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/Users/user1/Library/Python/2.7/lib/python/site-packages/pkg_resources/__init__.py", line 2661, in load_entry_point
    raise ImportError("Entry point %r not found" % ((group, name),))
ImportError: Entry point ('console_scripts', 'pip2') not found

来源：https://stackoverflow.com/questions/45495954/homebrew-pip-install-jupyter-error-importerror-entry-point-console-scripts