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How can you combine matplotlib with Python's garbage collector to manage memory when creating many figures?

hard📝 Application Q9 of 15
Matplotlib - Performance and Large Data
How can you combine matplotlib with Python's garbage collector to manage memory when creating many figures?
AClose each figure with plt.close() and call gc.collect() to free memory immediately
BOnly rely on gc.collect() without closing figures
CCreate figures without closing and disable garbage collector
DUse plt.show() to automatically clear memory
Step-by-Step Solution
Solution:
  1. Step 1: Role of plt.close()

    plt.close() releases figure memory by closing it.
  2. Step 2: Role of gc.collect()

    gc.collect() forces Python to clean up unreferenced objects immediately.
  3. Step 3: Combining both

    Closing figures and then calling gc.collect() ensures memory is freed promptly.
  4. Final Answer:

    Close each figure with plt.close() and call gc.collect() to free memory immediately -> Option A
  5. Quick Check:

    Close + gc.collect() = best memory management [OK]
Quick Trick: Use plt.close() plus gc.collect() for tight memory control [OK]
Common Mistakes:
  • Ignoring plt.close()
  • Disabling garbage collector
  • Expecting plt.show() to clear memory

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