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Python

We will install Python 3.8.4 using pyenv.

Prerequisites

Install pyenv.

Instructions

Install some prerequisites

brew install openssl readline sqlite3 xz zlib bzip2

Set compiler flags, add this to the beginning of your ~/.zshrc

# Set compiler flags from Homebrew
export LDFLAGS="-L/usr/local/opt/zlib/lib -L/usr/local/opt/bzip2/lib"
export CPPFLAGS="-I/usr/local/opt/zlib/include -I/usr/local/opt/bzip2/include"

Install Python 3.8.4

pyenv install 3.8.4

A note on pip

Some packages will fail to install on an ARM Mac if you have a slightly outdated pip.

After creating a virtualenv, always update pip before you do anything else.

So, for example:

pyenv virtualenv 3.8.4 foo
pyenv activate foo
pip install -U pip