I finally found myself needing some Python to do some OpenCV work on my Mac. And although Mac nowadays comes with Python pre-installed, it's not the exact version we are looking for.
Open a terminal and run the python command to demonstrate that.
This should now return version 2.
So how can we make sure that we have the latest Python version available on our Mac system?
Mac installing Python 3 permalink
The easiest way to install Python 3 is to use Homebrew. If you haven't had Homebrew installed yet, check out this article explaining how to set up Homebrew on your Mac.
With Homebrew installed, we can install Python, and it will install the latest stable (at the time of writing 3.9).
brew install pythonAnd once that is done, we should run the python3 command to see if our version matches.
However, it's a bit of a mission to manually type the number three after Python.
To fix that, we can add a new alias to link python3 to the command python.
I'm using Zsh, so I have a ~/.zshrc file, open this file and add the following line.
nano ~/.zshrcalias python="python3"If you restart your terminal, you should run just the python command.
And that's it. We now have the latest version of Python installed on our MacOs system.
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