Waterfall chart pattern in Matplotlib - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the matplotlib pyplot module with the common alias.

Matplotlib

import matplotlib.[1] as plt

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

Apyplot

Bplot

Ccharts

Dgraph

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'plot' instead of 'pyplot' causes an import error.

Using 'charts' or 'graph' are not valid matplotlib modules.

The matplotlib.pyplot module is imported as plt to create plots easily.

2fill in blank

medium

Complete the code to create a list of values representing changes for the waterfall chart.

Matplotlib

changes = [100, -30, 20, [1], -10]

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

A0

B50

C-20

D40

Attempts:

3 left

💡 Hint

Common Mistakes

Using a negative number when a positive change is intended.

Using zero which shows no change.

The value 40 represents a positive change in the waterfall chart.

3fill in blank

hard

Fix the error in the code to correctly calculate the cumulative sums for the waterfall chart.

Matplotlib

cumulative = [sum(changes[:[1]]) for i in range(len(changes))]

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

Ai+1

Blen(changes)

Ci

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using just 'i' excludes the current element from the sum.

Using 'len(changes)' sums the entire list every time.

Using i+1 includes the current element in the sum for cumulative calculation.

4fill in blank

hard

Fill both blanks to create a waterfall chart using matplotlib with bars and labels.

Matplotlib

plt.bar(range(len(cumulative)), cumulative, color=[1])
plt.xticks(range(len(labels)), [2])
plt.show()

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

A'blue'

Blabels

C'green'

Dcumulative

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'cumulative' as labels causes an error.

Using a color without quotes causes a syntax error.

The bars are colored blue, and the x-axis ticks use the labels list.

5fill in blank

hard

Fill all three blanks to add a title, label y-axis, and set grid lines on the chart.

Matplotlib

plt.title([1])
plt.ylabel([2])
plt.grid([3])

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

A"Waterfall Chart"

B"Value Change"

CTrue

DFalse

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting quotes around strings causes errors.

Using False disables grid lines.

The title is set to 'Waterfall Chart', y-axis label to 'Value Change', and grid lines are enabled with True.