Python – Nested If

Nested-If:  Writing if block inside another if block

Check the number is even or not only if the Number is positive

n = int(input(“Enter number :”)) if n>=0:     if n%2==0:         print(“Even number”)     else:         print(“Not even number”) else:     print(“Negative”)

Check the biggest of 2 numbers only if the 2 numbers are not equal:

print(“Enter 2 integers :”) a = int(input()) b = int(input()) if(a!=b):     if(a>b):         print(“a is big”)     else:         print(“b is big”) else:     print(“equal numbers given”)

Display Student Grade only if the Student passed in all subjects:

print(“Enter 3 subject marks :”) m1 = int(input()) m2 = int(input()) m3 = int(input())   if(m1>=40 and m2>=40 and m3>=40):     avg = (m1+m2+m3)/3     if(avg>=75):         print(“Distinction”)     elif(avg>=60):         print(“A-Grade”)     elif(avg>=50):         print(“B-Grade”)     else:         print(“C-Graade”) else:     print(“Fail”)