Lecture 22:- Logical Operators in Python

In Python, logical operators are used to perform logical operations on Boolean values (True and False). These operators allow you to combine multiple conditions and evaluate the truth value of the expressions. There are three common logical operators in Python:

1. Logical AND: and The and operator returns True if both conditions on its left and right sides are True, otherwise, it returns False.

Example:

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x = 5 y = 10 result = (x < 10) and (y > 5) print(result) # Output: True result2 = (x < 4) and (y > 15) print(result2) # Output: False

1. Logical OR: or The or operator returns True if at least one of the conditions on its left and right sides is True. It returns False only if both conditions are False.

Example:

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x = 5 y = 10 result = (x < 10) or (y < 5) print(result) # Output: True result2 = (x > 7) or (y < 5) print(result2) # Output: False

1. Logical NOT: not The not operator returns the opposite of the Boolean value. If the expression is True, not returns False, and if the expression is False, not returns True.

Example:

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x = 5 y = 10 result = not (x < y) print(result) # Output: False result2 = not (x > y) print(result2) # Output: True

Logical operators are commonly used to make decisions and control the flow of programs based on multiple conditions. They are often used in combination with conditional statements (such as if, elif, and else) and loops to control the execution of code based on the outcome of the logical expressions.