If you're dealing with NumPy arrays (or subclasses like pandas.Series or pandas.DataFrame) containing booleans you can actually use the bitwise inverse operator (~) to negate all booleans in an array:

Apr 7, 2025 · The not keyword in Python is a logical operator used to obtain the negation or opposite Boolean value of an operand. It is a unary operator, meaning it takes only one operand and returns its complementary Boolean value. For example, if False is given as an operand to not, it returns True, and vice versa; How to Use Not Operator in Python?

Work with Python’s not operator; Use the not operator in Boolean and non-Boolean contexts; Use operator.not_() to perform logical negation in a functional style; Avoid unnecessary negative logic in your code whenever possible

Jul 27, 2023 · How to Get a Negation of a Boolean in Python Using the “~” operator. This is the Bitwise NOT operator which can be used to return the negation of the operand. Output : Negation of a Boolean in Python Using “not” Operator. Not operator is the logical operator which returns the complementary of the Boolean value of the operand. Output :

May 24, 2011 · The negation operator in Python is not. Therefore just replace your ! with not. For your example, do this: if not os.path.exists("/usr/share/sounds/blues") : proc = subprocess.Popen(["mkdir", "/usr/share/sounds/blues"]) proc.wait()

Oct 19, 2022 · It is used to get the negation of a value, i.e. it allows us to invert the truth value of a given boolean expression. This operator can be applied in boolean situations like if statements and while loops. It also functions in non-Boolean settings, enabling you to …

The Python "not" operator is an essential tool for logical negation in conditions, loops, and expressions. Learning to properly use the "not" Boolean operator lets you write cleaner, more readable code, especially when dealing with Boolean …

Jan 26, 2025 · One such essential logical operator is the `not` operator. The `not` operator in Python allows developers to reverse the truth value of a given expression. This seemingly simple operator has far-reaching implications and can be used in a variety of scenarios to write more robust and flexible code.

May 20, 2023 · The not operator (also called the logical NOT operator) in Python is used to invert or negate the truth value of any boolean condition or expression. This allows you to essentially flip the meaning of any True/False logical statement.

Explore Python's not operator to invert conditions, enhance logic, and streamline control structures. Learn practical examples to increase coding efficiency.