Bar chart color customization in Matplotlib - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the color of the bars to blue.

Matplotlib

import matplotlib.pyplot as plt

values = [3, 7, 5]
plt.bar([1, 2, 3], values, color=[1])
plt.show()

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

A'green'

B'red'

C'blue'

D'yellow'

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the quotes around the color name.

Using a color name not recognized by matplotlib.

The color parameter sets the color of the bars. Here, 'blue' colors all bars blue.

2fill in blank

medium

Complete the code to set different colors for each bar using a list.

Matplotlib

import matplotlib.pyplot as plt

values = [4, 6, 8]
colors = ['red', 'green', 'blue']
plt.bar([1, 2, 3], values, color=[1])
plt.show()

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

A[1, 2, 3]

Bcolors

Cvalues

D'red'

Attempts:

3 left

💡 Hint

Common Mistakes

Passing a single color string instead of a list.

Passing the values list instead of colors.

Passing a list of colors to color colors each bar differently.

3fill in blank

hard

Fix the error in the code to correctly set the bar colors using a dictionary.

Matplotlib

import matplotlib.pyplot as plt

values = [5, 3, 9]
color_map = {1: 'cyan', 2: 'magenta', 3: 'yellow'}
colors = [color_map[i] for i in [1, 2, 3]]
plt.bar([1, 2, 3], values, color=[1])
plt.show()

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

Acolors

B[color_map]

Ccolor_map

Dvalues

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the dictionary color_map directly causes an error.

Passing the values list instead of colors.

The colors list contains the colors for each bar, so it should be passed to color.

4fill in blank

hard

Fill both blanks to create a bar chart with bars colored red if value > 5, else green.

Matplotlib

import matplotlib.pyplot as plt

values = [2, 7, 4, 9]
colors = ['red' if value [1] 5 else [2] for value in values]
plt.bar(range(len(values)), values, color=colors)
plt.show()

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

A>

B<

C'green'

D'blue'

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong comparison operator.

Forgetting quotes around the color names.

The condition checks if each value is greater than 5 to assign 'red', otherwise 'green'.

5fill in blank

hard

Fill all three blanks to create a dictionary of bar heights squared for bars with height > 3, using uppercase keys.

Matplotlib

values = {'a': 2, 'b': 5, 'c': 7}
squares = [1]: [2]**2 for [3] in values if values[[3]] > 3

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

Ak.upper()

Bvalues[k]

Ck

Dv

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong variable names.

Not converting keys to uppercase.

This dictionary comprehension creates keys as uppercase letters and values as squares of the original values greater than 3.