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Identify the error in this init function used in FuncAnimation:

medium📝 Debug Q14 of 15
Matplotlib - Animations
Identify the error in this init function used in FuncAnimation:
def init():
    line.set_data([], [])
    plt.show()
    return line,
ACalling plt.show() inside init blocks animation
BNot returning a list instead of tuple
CMissing frame argument in init
Dset_data should not be called in init
Step-by-Step Solution
Solution:
  1. Step 1: Understand plt.show() role

    plt.show() displays the plot window and blocks code execution until closed.
  2. Step 2: Why plt.show() in init is wrong

    Calling plt.show() inside init stops the animation setup and prevents frames from updating.
  3. Final Answer:

    Calling plt.show() inside init blocks animation -> Option A
  4. Quick Check:

    plt.show() blocks animation if inside init [OK]
Quick Trick: Never call plt.show() inside init function [OK]
Common Mistakes:
  • Thinking init needs frame argument
  • Confusing return type tuple vs list
  • Believing set_data is forbidden in init

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