Visual Studio Code – How to show Matplotlib graph in VS Code?

I’m following a Python tutorial book I have (Python Crash Course 2nd Edition) and I’m currently doing Project 2, where they teach about visually representing data with things such as Matplotlib. Unfortunately, the code I run (which is the same as the code in the book) doesn’t make a graph show up anywhere.

The book I’m following expects you to be running the code in Sublime Text, while I’m running it in VS Code, so I originally thought that maybe Sublime would show the graph automatically, but it doesn’t when I tried to run the code over there.

This is my code:

import matplotlib.pyplot as plt

squares = [1, 4, 9, 16, 25]

fig, ax = plt.subplots()
ax.plot(squares)

plt.show()

And I have installed matplotlib in the terminal, using this command:

$ python -m pip install --user matplotlib

The book I’m following says that, "The function plt.show() opens Matplotlib’s viewer and displays the plot as shown in Figure 15-1. The viewer allows you to zoom and navigate the plot, and when you click the disk icon, you can save any plot images you like." Figure 15-1 shows a graph with the various different points connected with lines. And remember, even running the code on Sublime doesn’t make the Matplotlib viewer show up.

Thanks for any help!