In this tutorial, I will demonstrate how to install python3 on MacOS.
MacOS comes with Python 2 preinstalled, but you will want to install Python 3 to work with the most up-to-date version of Python.
In this post we will cover the 3 main ways to install Python on MacOS
- Install Python With XCode
- Install Python With Package Installer
- Install Python With Homebrew
Check this If you are looking to install Python on Windows instead.
You can also run Python on Google Colab and that doesn’t require any installation.
Check if Python is Installed on Your Mac
$ python --version $ python3 --version
1. Install Python With Command Line Developer Tool
Installing Python on Mac can be done with the XCode Command Line Developer tool. To do launch Python installation on Mac OS, type in “
python --version“. You will get a message saying:
no developer tools were found at '/Applications/Xcode.app', requesting install. Choose option in the dialog to download the command line developer tools.
And a prompt like the one below telling you to install Xcode.
Xcode will also install Python 3 on your MacOS, but also a few other softwares in the process (which you may not want).
If you don’t get the pop-up on your Mac terminal
Install Xcode in the Terminal with the command below:
$ xcode-select --install
2. Install Python with Package Installer
The best place to install Python is from the official website.
Go to Python.org and click on the Download button to download the latest version for MacOS.
Go to your download folder and double-click on the
python-<version>-macosx.pkg file to start the Python installer.
Go through each of the prompts.
Keep the default install location.
Close and move installer to Trash.
3. Install Python with Homebrew
To install Python with Homebrew, first install the package installer, add the brew command to the Path and then use the
brew install python command in the Terminal.
Brew Install Python
First, install Homebrew.
$ /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
Then, install brew to Path:
$ export PATH="/usr/local/opt/python/libexec/bin:$PATH"
Next, install Python.
$ brew install python
Check if Python Was Installed Properly on Your Mac
Regardless of the technique that you used to install Python, to check if Python was installed, open the Terminal and type:
$ python3 --version
Alternatively, you can go to the Applications folder and see if Python 3.X is installed.
Check if Pip is Installed on MacOS
$ pip3 --version
If pip is not installed, you can run:
$ python3 get-pip.py
Check Your Mac Python Installation
Check Where Python was Installed on your Mac
Use the which python command to check where Python was installed on your Mac Computer.
$ which python
Check which Version of Python was Installed on your Mac
python --version command in the Terminal to verify the version of Python that you are running in your environment.
$ python --version
How to Uninstall Python on Mac
To uninstall Python on Mac, you need to verify how it was first installed. For instance, Catalina comes with Python installed by default and can’t be uninstalled. That is, here is how you can uninstall Python on MacOS.
Uninstall Python with Homebrew
To uninstall Python with Homebrew, first verify if it was indeed install with brew. To do so, type the
which python3 command in the Terminal. If the path to Python looks like this, it means that Python was installed with Homebrew.
brew command to uninstall Python with Homebrew.
$ brew uninstall python3
Uninstall Python Manually from Your Mac
To uninstall Python that was installed manually or with XCode, type the
which python3 command in the Terminal to see where Python is installed. Then open Finder and click on the Applications menu. Pick the Python executable file and put it in the trash.
If you have messed up your installation, check out this tutorial that shows you how to clean up Python installations.
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