This programming language misconception is about the meaning of Python's if-statement.

Incorrect and Correct Conception

Convince Yourself

You see that a is 2 at the end, thus the conditional's body executed only once.

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If you would like to learn more about this misconception, including its possible origins, symptoms students who hold this misconception might exhibit, the related programming language concepts, links to the corresponding parts of the Python language specification, and related misconceptions, check out IfIsLoop in the progmiscon.org misconception inventory.