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$PYTHON $PATH

altylsyl

# jk, just use pyenv

brew install pyenv
pyenv install 3.7.3
pyenv global 3.7.3

echo -e 'if command -v pyenv 1>/dev/null 2>&1; then\n  eval "$(pyenv init -)"\nfi' >> ~/.zshrc

exec $0

which python && which pip

and verify the output : )

# just use virutalenv

plz just use it like so:

virtualenv --python /usr/bin/python2.7 --system-site-packages env

ref (opens new window)

# on new computer

  1. from sourabh bajaj (opens new window)
brew install python
brew install python@2
pip install --upgrade setuptools
pip install --upgrade pip

  1. "Executable scripts from Python packages you install will be put in /usr/local/share/python, make sure it's on your PATH."

  2. from .zshrc via oh-my-zsh:

Python modules have been installed and Homebrew's site-packages is not in your Python sys.path, so you will not be able to import the modules this formula installed. If you plan to develop with these modules, please run:

mkdir -p $HOME/Library/Python/2.7/lib/python/site-packages

echo 'import site; site.addsitedir("/usr/local/lib/python2.7/site-packages")' >
  $HOME/Library/Python/2.7/lib/python/site-packages/homebrew.pth

after that do something like this ~ (all of these work with pip3 & python3 as well, if one doesn't work try the other)

test it out w/ this cute bs4 nugget

# my_parser.py
!#/usr/bin/env python

from bs4 import BeautifulSoup

messy = """
<html><p>
   <em>ay
            </em>
</p>
</html>
etc.
"""

BeautifulSoup.prettify()

pip install bs4
pip install beautifulsoup
python parser.py

explanation:

site.addsitedir(sitedir, known_paths=None)

Add a directory to sys.path and process its .pth files. Typically used in sitecustomize or usercustomize (see above).

sys.path

A list of strings that specifies the search path for modules. Initialized from the environment variable PYTHONPATH, plus an installation-dependent default.

Module site

This describes how to use .pth files to extend sys.path.