Installing Python Packages using pip

This guide presumes you have installed Python using pyenv.

All commands shown on this page are run in the terminal.

Step 1: Make sure you are in the correct Python version

pyenv version

It should print the version you've installed, so 3.11.5 from our Python installation tutorial. Does it not? Run pyenv global 3.11.5 to activate it.

Are you using virtual environments? Then make sure it prints out the name of the environment you want to be in.

If you are ever wondering why you get a ModuleNotFoundError even though you've just installed the library, it's probably because you had a different version of Python activated than what you're using to run your code.

Step 2: Using pip, install the package

In this example, we are installing the numpy package.

pip install numpy

It will print progress on the screen and tell you when it's done.

The package is now installed!

Installing multiple packages at once

You can install multiple package at once by separating their names with spaces. If we want to install matplotlib, numpy, and pandas we can run

pip install matplotlib numpy pandas

See what packages are installed

Want to know what is installed in your active version of Python? Use this command:

pip list

Which will print a list of all installed packages.

More pip possibilities ⭐️ Intermediate

%%TODO add video about more pip options

Or see the official documentation website of pip.