Python – Logical Operators

Introduction to Python Logical Operators

In Python, logical operators are used to combine multiple conditions and evaluate them as a single expression. These operators allow you to perform logical operations such as AND, OR, and NOT on boolean values or expressions. Logical operators are commonly used in decision-making and control flow statements to determine the outcome based on certain conditions.

Python Logical Operators

There are three logical operators in Python:

• AND: Returns True if both conditions are True
• OR: Returns True if at least one condition is True
• NOT: Returns the opposite of the condition

AND Operator

The AND operator returns True only if both conditions it connects are True. If either of the conditions is False, the result will be False.

Example:

x = 5
y = 10

if x > 0 and y < 20:
    print("Both conditions are True")
else:
    print("At least one condition is False")

The output of the above code will be:

Both conditions are True

OR Operator

The OR operator returns True if at least one of the conditions it connects is True. If both conditions are False, the result will be False.

Example:

x = 5
y = 10

if x > 0 or y > 20:
    print("At least one condition is True")
else:
    print("Both conditions are False")

The output of the above code will be:

At least one condition is True

NOT Operator

The NOT operator is used to reverse the logical state of a condition. If a condition is True, the NOT operator will return False, and if a condition is False, the NOT operator will return True.

Example:

x = 5

if not x > 10:
    print("The condition is False")
else:
    print("The condition is True")

The output of the above code will be:

The condition is True

Combining Logical Operators

You can also combine multiple logical operators to create complex conditions for your expressions.

Example:

x = 5
y = 10
z = 15

if x > 0 and y < 20 or z == 15:
    print("The condition is True")
else:
    print("The condition is False")

The output of the above code will be:

The condition is True

Conclusion

Logical operators in Python allow you to make decisions based on multiple conditions. Understanding how to use AND, OR, and NOT operators will help you write more efficient and effective code. By combining these operators, you can create complex conditions to control the flow of your program.

Remember to use logical operators wisely and consider the order of operations when combining them. Properly utilizing logical operators will enhance the readability and maintainability of your code.