Multiple legends in Matplotlib - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add the first legend to the plot.

Matplotlib

import matplotlib.pyplot as plt

plt.plot([1, 2, 3], label='Line 1')
plt.plot([3, 2, 1], label='Line 2')
plt.[1]()
plt.show()

Drag options to blanks, or click blank then click option'

Alegend

Btitle

Cxlabel

Dylabel

Attempts:

3 left

💡 Hint

Common Mistakes

Using title() instead of legend().

Forgetting to call any function to show the legend.

The legend() function adds a legend to the plot showing labels.

2fill in blank

medium

Complete the code to create a second legend for the scatter points.

Matplotlib

import matplotlib.pyplot as plt

line1, = plt.plot([1, 2, 3], label='Line 1')
line2, = plt.plot([3, 2, 1], label='Line 2')
scatter = plt.scatter([1, 2, 3], [3, 2, 1], label='Points')
plt.legend(handles=[line1, line2])
plt.[1](handles=[scatter], loc='upper right')
plt.show()

Drag options to blanks, or click blank then click option'

Aylabel

Btitle

Cxlabel

Dlegend

Attempts:

3 left

💡 Hint

Common Mistakes

Using title() or other functions instead of legend().

Not specifying the handles parameter for the second legend.

To add a second legend, call plt.legend() again with the new handles.

3fill in blank

hard

Fix the error in the code to correctly add two legends to the plot.

Matplotlib

import matplotlib.pyplot as plt

line1, = plt.plot([1, 2, 3], label='Line 1')
line2, = plt.plot([3, 2, 1], label='Line 2')
scatter = plt.scatter([1, 2, 3], [3, 2, 1], label='Points')
leg1 = plt.legend(handles=[line1, line2], loc='upper left')
plt.add_artist([1])
plt.legend(handles=[scatter], loc='upper right')
plt.show()

Drag options to blanks, or click blank then click option'

Aleg1

Bscatter

Cline1

Dline2

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to add the scatter object instead of the legend.

Not adding the first legend as an artist before the second legend.

When adding multiple legends, the first legend must be added as an artist using plt.gca().add_artist() or plt.add_artist() with the legend object.

4fill in blank

hard

Fill both blanks to create two legends and add the first legend as an artist.

Matplotlib

import matplotlib.pyplot as plt

line1, = plt.plot([1, 2, 3], label='Line 1')
line2, = plt.plot([3, 2, 1], label='Line 2')
scatter = plt.scatter([1, 2, 3], [3, 2, 1], label='Points')
leg1 = plt.[1](handles=[line1, line2], loc='upper left')
plt.[2](leg1)
plt.legend(handles=[scatter], loc='upper right')
plt.show()

Drag options to blanks, or click blank then click option'

Alegend

Badd_artist

Ctitle

Dxlabel

Attempts:

3 left

💡 Hint

Common Mistakes

Using title() or xlabel() instead of add_artist().

Not adding the first legend as an artist before the second legend.

First, create the legend with plt.legend(). Then add it as an artist with plt.add_artist() before adding the second legend.

5fill in blank

hard

Fill all three blanks to create two legends with different locations and add the first legend as an artist.

Matplotlib

import matplotlib.pyplot as plt

line1, = plt.plot([1, 2, 3], label='Line 1')
line2, = plt.plot([3, 2, 1], label='Line 2')
scatter = plt.scatter([1, 2, 3], [3, 2, 1], label='Points')
leg1 = plt.[1](handles=[line1, line2], loc=[2])
plt.[3](leg1)
plt.legend(handles=[scatter], loc='upper right')
plt.show()

Drag options to blanks, or click blank then click option'

Alegend

B'upper left'

Cadd_artist

D'lower right'

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong location strings or forgetting quotes.

Not adding the first legend as an artist.

Create the first legend with plt.legend() at 'upper left'. Then add it as an artist with plt.add_artist() before adding the second legend at 'upper right'.