Displaying multiple lines

This recipe will show how to display multiple lines in a graph.

Getting ready

We need to install matplotlib in our virtual environment:

$ echo "matplotlib==2.2.2" >> requirements.txt
$ pip install -r requirements.txt

If you are using macOS, it's possible that you get an error like this—RuntimeError: Python is not installed as a framework. See the matplolib documentation on how to fix it: https://matplotlib.org/faq/osx_framework.html.

How to do it...

1. Import matplotlib:

>>> import matplotlib.pyplot as plt

2. Prepare...