Conditions in Python

Conditions are used in Python when we want our program to make a decision. They check whether something is TRUE or FLASE and then run the required code.

Python mainly uses if, elif, and else for conditions.

if Statement

The if statement runs a block of code when a condition is true.

age = 20

if age >= 18:
    print("You are an adult")

Output:

You are an adult

else Statement

else runs when the if condition is false.

age = 15

if age >= 18:
    print("You are an adult")
else:
    print("You are a minor")

elif Statement

elif is used when we want to check more than one condition.

marks = 75

if marks >= 90:
    print("Grade A")
elif marks >= 60:
    print("Grade B")
else:
    print("Grade C")

Output:

Grade B

Comparison Operators

Conditions commonly use comparison operators such as:

==    Equal to
!=    Not equal to
>     Greater than
<     Less than
>=    Greater than or equal to
<=    Less than or equal to

For example:

age = 20

if age >= 18:
    print("Eligible")