🔧[Python]Install Python to Mac

First, make sure python is installed on your mac.

% python --version
zsh: command not found: python

% pyenv -v
zsh: command not found: pyenv

Install Homebrew

copy command from https://brew.sh/index

% /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
% brew -v
Homebrew 3.6.17

Install pyenv

% brew install pyenv
% pyenv -v
pyenv 2.3.12

% echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.zshrc
% echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.zshrc
% echo 'eval "$(pyenv init -)"' >> ~/.zshrc
% source ~/.zshrc

Install Python

% pyenv install --list
.
.
3.11.0
3.11-dev
3.11.1
3.12.0a4
3.12-dev
activepython-2.7.14
.
.

Select 3.11.1.

% pyenv install 3.11.1
% pyenv versions
* system
  3.11.1
% pyenv global 3.11.1
% python --version
Python 3.11.1

Check test code

% vim test.py

make test file
test.py

print('Hello, world!')

Run a test file.

% python test.py
Hello, world!

Change version

Confirmation of current status

% python --version
Python 3.11.1

% pyenv versions 
system
* 3.11.1

install version

% pyenv install 3.10
% pyenv versions
system
3.10.9
* 3.11.1

change version

% pyenv global 3.10.9
% python --version
Python 3.10.9