How to do it...

The following code block plots a pie chart of the genre of movies released in a year:

1. Set up the data for the pie chart:

labels = ['SciFi', 'Drama', 'Thriller', 'Comedy', 'Action', 'Romance']
sizes = [5, 15, 10, 20, 40, 10]          # Add upto 100%

2. Show one slice slightly outside the circle:

explode = (0, 0, 0, 0, 0.1, 0) # only "explode" the 5th slice (i.e.'Action')

3. Plot the pie chart:

plt.pie(sizes, labels=labels, explode=explode, autopct='%1.1f%%', 
        shadow=True, startangle=90)

4. The equal aspect ratio ensures that pie is drawn as a circle. The default is an ellipse:

plt.axis('equal') 

5. Display the graph on the screen:

plt.show()