How Does Python's Short-Circuiting Affect `and` and `or` Boolean Expressions?

Python's Short-Circuiting Boolean Expressions

Python's boolean expressions support short-circuiting for both and and or operators. This behavior is explicitly mentioned in the official Python documentation, corroborating the provided answer.

Short-Circuiting in Python

Short-circuiting refers to a technique where the evaluation of an expression is terminated prematurely once the result is determined. In Python, this behavior applies to boolean expressions in the following manner:

• and Operator: If the first operand evaluates to False, the entire expression evaluates to False without evaluating the second operand.
• or Operator: If the first operand evaluates to True, the entire expression evaluates to True without evaluating the second operand.

Example 1: and Operator

x = 5
if x > 0 and x < 10:
    print("x is between 0 and 10")

In this example, the second condition (x < 10) will only be evaluated if the first condition (x > 0) is true. If x is less than or equal to 0, the entire expression immediately evaluates to False without checking the second condition.

Example 2: or Operator

y = True
if y or x > 0:
    print("y is True or x is greater than 0")

Similarly, if y is True, the second condition (x > 0) will not be evaluated. The expression will immediately evaluate to True.

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