PYTHON, MAC, HOMEBREW

Python set up

Index

Configure Python3 properly: pyenv

The easiest way to get started is with Homebrew

brew install pyenv

Now let’s install the latest Python version (3.7.3 as of this writing)

pyenv install 3.7.3

Set it as our global default version for pyenv environments

pyenv global 3.7.3
# and verify it worked
pyenv version

The power of pyenv comes from its control over our shell’s path. In order for it to work correctly, we need to add the following to our configuration file (.zshrc for me, possibly .bash_profile for you):

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

After that command, our dotfile (.zshrc for zsh or .bash_profile for Bash) should look include these lines:

if command -v pyenv 1>/dev/null 2>&1; then
  eval "$(pyenv init -)"
fi

We can confirm pyenv is managing our Python 3 version

which python
#/Users/mbbroberg/.pyenv/shims/python
python -V
# Python 3.7.3
pip -V
# pip 19.0.3 from /Users/mbbroberg/.pyenv/versions/3.7.3/lib/python3.7/site-packages/pip (python 3.7)

Virtualenv

  • Install it 
    pip install --user pipenv
  • Create and activate it (eg: venv) 
    virtualenv venv
source venv/bin/activate
  • Deactivate 
    deactivate

Manage libraries

  • List libraries 
    pip list
  • Create requirements.txt 
    pip freeze --local > requirements.txt
  • Install from requirements.txt 
    pip install -r requirements.txt

Configs files

Having the config/auth.py that includes the toke variable, we can import it using:

from config.auth import token