Mac os update Python easy update to Python 3.9 with homebrew

Update Python easy update to Python 3.9 with homebrew – To update Mac os python from an older version to the latest python example python 3.9.1 you can do the folowing :

This article briefly describes how to replace its version of python on Mac. I wrote a similar article some time ago.

python mac Mac os update Python

Introduction – update to Python 3.9.1 – HOMEBREW

I used Homebrew to get the latest python as describe on https://formulae.brew.sh/formula/python@3.9:

brew install python@3.9
python --version
Python 3.8.5
python3 --version
Python 3.8.5

You see that it stays on the older version.

Detect where python or python3 is setup

I had to first verify where my python command is pointing, by launching :

which python

It gave me in my case:

/Users/myuser/.pyenv/shims/python

You need also to verify where is python3 command if you have different versions :

which python3  

I get :

/Users/myuser/.pyenv/shims/python3

Replace the version

I need to replace the version of the both command python and python3 by launching :

ln -s -f /usr/local/bin/python3.9 /Users/myuser/.pyenv/shims/python3

And also launch :

ln -s -f /usr/local/bin/python3.9 /Users/myuser/.pyenv/shims/python

The you can test it works :

python --version 
Python 3.9.1
python3 --version 
Python 3.9.1

Mac os update Python – Internal links :

This article briefly describes how to replace its version of python on Mac. I wrote a similar article some time ago.

http://128mots.com/index.php/2021/02/15/implementation-des-graphes-en-python/

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