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Hello Pythonisatas, welcome back. Let’s create a pie chart using Matplotlib in Python.

How to Create a Pie Chart using Matplotlib

To create a pie chart like the one below:

1. Install and Import Matplotlib’s pyplot module
2. Then create a list of data, a list of labels, and a list of colors
3. Now plot the values using the pie method.
4. Provide this chart: a title and then using the show() method plot the chart.

import matplotlib.pyplot as plt

my_data = [30, 30, 30]
my_labels = ["label1", "label2", "label3"]
c = ['pink', '#b3ecff', '#90EE90']

plt.pie(my_data, labels=my_labels, colors=c)

plt.title("My Pie Chart")

plt.show()

What Is Explode In Pie Chart Python?

Maybe you want one or more parts of this pie chart to show up highlighted like this:

To create an exploded chart like this:

1. Create a list of explode values.
2. Add this list to the pie() method

import matplotlib.pyplot as plt

my_data = [30, 30, 30]
my_labels = ["label1", "label2", "label3"]
c = ['pink', '#b3ecff', '#90EE90']
myexplode = [0, 0, 0.2]

plt.pie(my_data, labels=my_labels, colors=c, explode=myexplode)

plt.title("My Pie Chart")

plt.show()

How do I add percentages to a pie chart in Matplotlib?

You might want to show the percentage occupied by each part like this:

Here’s how you add the percentage here:

1. Add autopct attribute then, provide the format in which you want to display.
2. %1.1f means floating point value with 1 decimal point.

import matplotlib.pyplot as plt

my_data = [30, 30, 30]
my_labels = ["label1", "label2", "label3"]
c = ['pink', '#b3ecff', '#90EE90']

plt.pie(my_data, labels=my_labels, colors=c, autopct="%1.1f")

plt.title("My Pie Chart")

plt.show()