Animation update function in Matplotlib - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the animation module from matplotlib.

Matplotlib

from matplotlib import [1]

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

Apyplot

Bfigure

Canimation

Daxes

Attempts:

3 left

💡 Hint

Common Mistakes

Importing pyplot instead of animation

Using figure or axes which are not for animation

The animation module is imported from matplotlib to create animations.

2fill in blank

medium

Complete the update function to set new y-data for the line in the animation.

Matplotlib

def update(frame):
    y = [i * frame for i in range(5)]
    line.set_[1](y)
    return line,

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Adata

Bxdata

Cvalues

Dydata

Attempts:

3 left

💡 Hint

Common Mistakes

Using set_xdata instead of set_ydata

Using set_data which requires both x and y

The y-data of the line is updated using the set_ydata() method.

3fill in blank

hard

Fix the error in the update function to correctly return the updated line object as a tuple.

Matplotlib

def update(frame):
    y = [frame + i for i in range(5)]
    line.set_ydata(y)
    return [1]

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A(line,)

Bline,

C[line]

Dline

Attempts:

3 left

💡 Hint

Common Mistakes

Returning just line without tuple

Returning a list instead of a tuple

The update function must return a tuple of the updated artists, so (line,) is correct.

4fill in blank

hard

Fill both blanks to create an animation object that updates the line every 100 milliseconds for 50 frames.

Matplotlib

ani = animation.FuncAnimation(fig, [1], frames=[2], interval=100)

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Aupdate

Bline

C50

D100

Attempts:

3 left

💡 Hint

Common Mistakes

Using line instead of update function

Setting frames to 100 instead of 50

The FuncAnimation needs the update function and the number of frames to animate.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps each word to its length if the length is greater than 3.

Matplotlib

lengths = { [1]: [2] for [3] in words if len([3]) > 3 }

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Aword

Blen(word)

Ditem

Attempts:

3 left

💡 Hint

Common Mistakes

Using item instead of word

Using word instead of len(word) as value

The dictionary comprehension uses the word as key and its length as value, iterating over words.