moving python3 to brew and updating

问题

I am running osx 10.11.6 (el-capitan) a long time ago I installed Python3 using the download on python.org (3.5.0) since then I've installed brew and would like to use brew to manage python3 instead. I have to upgrade to python3.6 because I'm getting the tlsv1 alert protocol version error.

1. How do I uninstall my current python3

2. How do I get brew to install python 3.6 (it seems to only want to install 3.5.1)

or is it better to just run different python versions beside one another?

Thanks!

回答1:

Short answer: pyenv is the absolute best!

Longer answer:

1. (Optional: use Brew to remove whatever Python it knows about, just to save disk space.)
2. Follow these macOS installation instructions. My simple summary:
   • brew install pyenv
   • add eval "$(pyenv init -)" to your .zshrc or .bashrc
   • restart your shell
   • pyenv install 3.6.4
   • pyenv global 3.6.4
   • verify that pyenv global prints the version you like.
   • verify that which python and which pip both live in ~/.pyenv/shims/
3. Use pyenv-managed pip to install your favorite packages globally, like IPython, etc. (Of course, you'll use virtualenv to manage your per-project dependencies right?)
4. Happy Pythoning 🐍! 😁

In addition to being able to have multiple pythons installed and a global default configured, you can even have per-directory overrides!

Summary: pyenv + virtualenv = the good life.

来源：https://stackoverflow.com/questions/49911259/moving-python3-to-brew-and-updating