Why pie charts show proportions in Matplotlib - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a pie chart showing proportions of fruits.

Matplotlib

import matplotlib.pyplot as plt

sizes = [30, 45, 25]
labels = ['Apples', 'Bananas', 'Cherries']
plt.pie(sizes, labels=[1])
plt.show()

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

Alabels

Bcolors

Csizes

Dexplode

Attempts:

3 left

💡 Hint

Common Mistakes

Using the sizes list instead of labels for the labels parameter.

Confusing colors or explode parameters with labels.

The labels parameter adds names to each slice, showing what each proportion represents.

2fill in blank

medium

Complete the code to add percentages on each pie slice.

Matplotlib

plt.pie(sizes, labels=labels, autopct=[1])
plt.show()

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

A'%s%%'

B'%d%%'

C'%.1f%%'

D'%%.1f'

Attempts:

3 left

💡 Hint

Common Mistakes

Using '%d%%' which shows no decimal places.

Using incorrect format strings that cause errors.

The autopct parameter formats the percentage text on slices. '%.1f%%' shows one decimal place.

3fill in blank

hard

Fix the error in the code to correctly display the pie chart with a shadow.

Matplotlib

plt.pie(sizes, labels=labels, autopct='%.1f%%', [1]=True)
plt.show()

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

Ashadow

Bshadows

Cshadowed

Dshow_shadow

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect parameter names like 'shadows' or 'shadowed'.

Trying to add shadow with unsupported parameters.

The correct parameter to add a shadow is shadow=True.

4fill in blank

hard

Fill both blanks to create a pie chart with exploded slices and a start angle.

Matplotlib

explode = ([1], [2], 0)
plt.pie(sizes, labels=labels, explode=explode, startangle=90)
plt.show()

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

A0.1

B0.2

C0

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using integers like 1 which explode slices too much.

Using negative numbers which cause errors.

The first slice is exploded by 0.1, the second slice is not exploded (0).

5fill in blank

hard

Fill all three blanks to create a pie chart with colors, shadow, and percentage format.

Matplotlib

colors = ['gold', 'yellowgreen', [1]]
plt.pie(sizes, labels=labels, colors=colors, autopct=[2], [3]=True)
plt.show()

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

A'lightcoral'

B'%.0f%%'

Cshadow

D'blue'

Attempts:

3 left

💡 Hint

Common Mistakes

Using invalid color names or missing quotes.

Wrong format strings for autopct causing errors.

Incorrect parameter name for shadow.

The third color is 'lightcoral', percentages show no decimals with '%.0f%%', and shadow is enabled with shadow=True.