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Question 54

How does `x and y` behave when `x` is falsy?

  1. It returns the falsy `x` without evaluating `y`.Correct answer
  2. It evaluates both operands and returns `False`.
  3. It skips `x`, evaluates `y`, and returns `y`.
  4. It raises TypeError unless both operands are Boolean.

Explanation

The falsy first operand already determines the conjunction's truth, so Python returns `x` and does not evaluate `y`. Saying that `and` always returns a Boolean loses the operand-returning behavior used by this operator.

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Question 54: How does `x and y` behave when `x` is falsy? · Python Fundamentals · Questena