Plotting pie charts

Pie charts! A Business 101 favorite, and a common way of presenting percentages. We'll see in this recipe how to plot a pie chart, with different slices representing proportions.

Getting ready

We need to install matplotlib in our virtual environment using the following commands:

$ echo "matplotlib==3.2.1" >> requirements.txt
$ pip install -r requirements.txt

If you are using macOS, you may get an error like this: RuntimeError: Python is not installed as a framework. See the matplotlib 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 the data. This represents several lines of products:

   >>> DATA = (
   ...     ('Common', 100),
   ...     ('Premium', 75),
   ...     ('Luxurious', 50),
   ...     ('Extravagant', 20),
   ... )
   

...