[Solved] What will the following code output? import matplotlib.pyplot as plt fig, ax = plt.subplots() background = fig.canvas.copy_from_bbox(ax.bbox) ax.... What will the following code output? | Matplotlib

Matplotlib - Animations

What will the following code output?

import matplotlib.pyplot as plt
fig, ax = plt.subplots()
background = fig.canvas.copy_from_bbox(ax.bbox)
ax.plot([1, 2], [3, 4])
fig.canvas.restore_region(background)
print(ax.lines)

A[<matplotlib.lines.Line2D object at ...>]

B[]

CNone

DError: AttributeError

Step-by-Step Solution

Solution:

Step 1: Understand plot and background saving
The line is plotted after saving the background, so it is added to ax.lines.
Step 2: Effect of restore_region on lines
Restoring background does not remove lines; it restores the canvas background only.
Final Answer:
List with one Line2D object representing the plotted line -> Option A
Quick Check:
ax.lines contains plotted lines after restore_region [OK]

Quick Trick: restore_region resets background, not plot elements [OK]

Common Mistakes:

Assuming restore_region clears plotted lines
Expecting empty list after restore_region
Confusing restore_region with ax.clear()

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More Matplotlib Quizzes

What will the following code output?

Step 1: Understand plot and background saving

Step 2: Effect of restore_region on lines

Final Answer:

Quick Check:

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