if the first condition is false, which means no matter what the second condition is output will be false. So will the second condition get computed ?
if a > b and b > c:
do something ...
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No, it won't. This is called short-circuit evaluation, and every language I can think of implements it. – Paul M. Feb 04 '22 at 07:11
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No, it will not, if the first clause of an `and` expression is `False`, the second will not get computed; similarly, if the first clause of an `or` expression is `True`, the second will not get computed. – Grismar Feb 04 '22 at 07:11
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Python short-circuits boolean expressions. As soon as the result of the entire expression is known, evaluation stops.
If you're using and and the left-hand expression is False, the entire expression must be False, so the right-hand expression wil not be evaluated.
Similarly for or if the left-hand expression is True, the right-hand expression will not be evaluated.
Consequently, you should be careful about including function calls with side-effects in boolean expressions. They can lead to program behavior that is difficult to predict.
Chris
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