Python · Boolean in Depth
NOT Operator
The full text of this chapter, to read or revisit. To practise, do the exercises.
▶ Do the exercisesExercise 1 — NOT Operator
The
not
operator is a logical operator that negates the value of a boolean. It returns
True
if the value is
False
, and
False
if the value is
True
.
Let's display the truth table with code !
print("not False =", not False)
print("not True =", not True)
Exercise 2 — Did you get NOT?
Match each formula of the left with its result on the right.
Items to match
• not True
• not False
• not not True
• not not False
Definitions
• False
• True
• True
• False
Exercise 3 — NOT Operator Quiz
What will be the result of
not True
?
Options
• False
• True
• Error
• None
Hint : NOT operator inverts the boolean value. Since True becomes False, the result is False.
Exercise 4 — Match NOT Results
Match each NOT operation with its correct result:
Items to match
• not True
• not False
• not (True and False)
• not (False or True)
Definitions
• False
• True
• True
• False