[Solved] Find the bug in this ranking chart code:import matplotlib.pyplot as plt values = [8, 6, 9] values = values.sort() plt.bar(range(len(values)), values) plt.show() | Matplotlib

Matplotlib - Real-World Visualization Patterns

Find the bug in this ranking chart code:

import matplotlib.pyplot as plt
values = [8, 6, 9]
values = values.sort()
plt.bar(range(len(values)), values)
plt.show()

Arange(len(values)) is invalid syntax

Bplt.bar() needs x labels as strings

Cvalues.sort() returns None, so values becomes None

Dplt.show() must be called before plt.bar()

Step-by-Step Solution

Solution:

Step 1: Understand list.sort() return value
list.sort() sorts in place and returns None, so assigning it to values sets values to None.
Step 2: Consequence on plotting
plt.bar() receives None for values, causing an error or empty plot.
Final Answer:
values.sort() returns None, so values becomes None -> Option C
Quick Check:
list.sort() returns None, do not assign it [OK]

Quick Trick: Do not assign list.sort() result; it returns None [OK]

Common Mistakes:

Master "Real-World Visualization Patterns" in Matplotlib

9 interactive learning modes - each teaches the same concept differently

More Matplotlib Quizzes

Find the bug in this ranking chart code: