NOT

What Is the NOT Operator?

  • The NOT operator not in Python is used to reverse the boolean value of a statement.

How to Use It:

  • The basic way to use the NOT operator is:

    python
    result = not operand
    • operand is the condition you want to reverse.
    • result will be True if operand is False, and False if operand is True.

Truth Table - NOT Operator:

  • Here’s how the NOT operator works:

     
    Operand  Return Value
True     False
False    True

Examples and Exercises:

  1. Using NOT with Boolean Values:

    python
    # not True
a = True
c = not a
print('not', a, 'is:', c)  # Output: not True is: False

# not False
a = False
c = not a
print('not', a, 'is:', c)  # Output: not False is: True

  2. Using NOT with Non-Boolean Values:

    • In Python, any non-zero value is considered True and zero is considered False.
    python
    # not True
a = 5
c = not a
print('not', a, 'is:', c)  # Output: not 5 is: False

# not False
a = 0
c = not a
print('not', a, 'is:', c)  # Output: not 0 is: True

Summary:

  • The NOT operator not in Python is useful for reversing the boolean value of a condition. It helps in making decisions in your code. Try the examples to see how it works!