[Solved] Identify the error in this code for before-after bar plot:import matplotlib.pyplot as plt before = [3, 4] after = [5, 6] plt.bar([0, 1], before) plt.bar([0, 1], after) plt.show() | Matplotlib

Matplotlib - Real-World Visualization Patterns

Identify the error in this code for before-after bar plot:

import matplotlib.pyplot as plt
before = [3, 4]
after = [5, 6]
plt.bar([0, 1], before)
plt.bar([0, 1], after)
plt.show()

Aplt.show() is missing

BBars for before and after overlap at same positions

Cbefore and after lists must be same length

Dplt.bar requires three arguments

Step-by-Step Solution

Solution:

Step 1: Check bar positions
Both before and after bars are plotted at positions 0 and 1, causing them to overlap and hide one another.
Step 2: Identify correct fix
To avoid overlap, after bars should be shifted to different x positions, e.g., [0.3, 1.3].
Final Answer:
Bars for before and after overlap at same positions -> Option B
Quick Check:
Same x positions cause bar overlap [OK]

Quick Trick: Shift bars on x-axis to avoid overlap [OK]

Common Mistakes:

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