Python Logical Operators

The logical operators are used to combine the conditional statements. Let us check out this to learn more about the Python logical operators in Python.

What is the Logical Operators in Python?

In Python, Logical operators will function on the conditional statements. They will work on Logical AND, Logical OR, and Logical NOT operations.

What is Truth Table for Logical Operators in Python?

X	Y	X and Z	X or Y	not (X)	not (Y)
T	T	T	T	F	F
T	F	F	F	F	T
F	T	T	F	T	F
F	F	F	F	T	T

What is the Logical AND operator in Python?

The Logical and AND operator will return True if both the operands are True otherwise, it will give the result as False.

Example

# Python program to demonstrate 
# logical and operator 
a = 10
b = 10
c = -10
if a > 0 and b > 0: 
    print("The numbers are greater than 0") 
if a > 0 and b > 0 and c > 0: 
    print("The numbers are greater than 0") 
else: 
    print("Atleast one number is not greater than 0")

Output

The numbers are greater than 0
Atleast one number is not greater than 0

Example 2

# Python program to demonstrate 
# logical and operator 
a = 10
b = 12
c = 0
if a and b and c: 
    print("All the numbers have boolean value as True") 
else: 
    print("Atleast one number has boolean value as False")

Output

Atleast one number has boolean value as False

What is the Logical OR operator in Python?

The logical OR operator will return a True value if the operands come true.

Example

# Python program to demonstrate 
# logical or operator 
a = 10
b = -10
c = 0
if a > 0 or b > 0: 
    print("Either of the number is greater than 0") 
else: 
    print("No number is greater than 0") 
if b > 0 or c > 0: 
    print("Either of the number is greater than 0") 
else: 
    print("No number is greater than 0")

Output

Either of the number is greater than 0
No number is greater than 0

What is the Logical NOT operator in Python?

The logical not operator will function with a single boolean value. Hence, if the boolean value will come True then it will return as False and Vice versa.

Example

# Python program to demonstrate 
# logical not operator 
a = 10
 
if not a: 
    print("Boolean value of a is True") 
if not (a%3 == 0 or a%5 == 0): 
    print("10 is not divisible by either 3 or 5") 
else: 
    print("10 is divisible by either 3 or 5")

Output

10 is divisible by either 3 or 5

What is Order of Precedence of Logical Operators?

Python will calculate the expression from left to right in multiple operators.

Example

# Python program to demonstrate 
# order of evaluation of logical 
# operators 
def order(x): 
    print("Method called for value:", x) 
    return True if x > 0 else False  
a = order 
b = order 
c = order 
if a(-1) or b(5) or c(10): 
    print("Atleast one of the number is positive")

Output

Method called for value: -1
Method called for value: 5
Atleast one of the number is positive

Conclusion

To conclude, these Python logical operators provide a straightforward way to make decisions in your code. “AND” ensures both conditions must be true for the overall expression to be true, while “or” requires at least one condition to be true.

On the other hand, “not” negates the truth value of a condition. Several examples are illustrated in this for more clarity on Logical And, Logical, Logical Not operators.

Python Logical Operators- FAQs