A legend that tells two lines apart

Write code · Medium · §3.1 From one chart to many

Draw the monthly sign-ups for an app's free plan and paid plan as two lines on one Axes. Draw free first and pro next, label the lines Free and Pro, respectively, and then show a legend.

The title is Sign-ups by plan.

Target figure for A legend that tells two lines apart — Target figure

Starter code

import matplotlib.pyplot as plt

months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun"]
free = [320, 410, 380, 450, 520, 610]
pro = [40, 55, 62, 70, 95, 120]

# Write your code here

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