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Why does an infinite loop occur if the loop variable never changes inside the loop?

hard📝 Conceptual Q10 of 15
Python - While Loop
Why does an infinite loop occur if the loop variable never changes inside the loop?
ABecause the loop condition never becomes false
BBecause Python does not allow variable changes inside loops
CBecause the loop variable is reset automatically
DBecause the loop runs only once
Step-by-Step Solution
Solution:

  1. Step 1: Understand loop condition evaluation

    Loops run while condition is true; if variable never changes, condition stays true.

  2. Step 2: Explain infinite loop cause

    Without variable change, condition never becomes false, so loop never ends.

  3. Final Answer:

    Because the loop condition never becomes false -> Option A

  4. Quick Check:

    Loop ends only when condition is false [OK]
Quick Trick: Loop ends when condition becomes false [OK]
Common Mistakes:
MISTAKES
  • Thinking Python resets variables automatically
  • Believing loops run only once by default
  • Confusing variable change with loop exit

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