Nested If statement in Python

A statement that contains other statements is called a compound statement. To perform more complex checks, if a statement can be nested, it can be placed one inside the other. In such a case, the inner if the statement is the statement part of the outer one. Nested if statements are used to check if more than one condition is satisfied.

Actually, when a series of decisions are involved, we may have to use more than one if…..else statement in nested form as follows:

if(test condition 1):
  if(test condition 2):
     statement-1
  else:
     statement-2
else:
 statement-3
statement-x

Python Nested If Condition Examples

Here if condition 1 is false, then statement-3 is executed; otherwise, it continues to perform the second test. If condition 2 is true, the statement-1 is evaluated; otherwise, statement-2 is evaluated, and the control is transferred to the statement-x.

Example 1

number=int(input("Enter the value of number="))
if(number!=0):
    if(number>0):
        print("The number is positive")
    else:
        print("The number is negative")
else:
    print("The number is equal to Zero")

Output:

Enter the value of number=-90

The number is negative

Example 2

number1=int(input("Enter the value for First number="))
number2=int(input("Enter the value for Second number="))
number3=int(input("Enter the value for Third number="))
if(number1<number2):
    if(number1<number3):
        print("The first number is smallest")
    else:
        print("The third number is smallest")
else:
    if(number2<number3):
        print("The second number is smallest")
    else:
        print("The third number is smallest")

Output:

Enter the value for First number=90

Enter the value for Second number=50

Enter the value for Third number=100

The second number is smallest