Aadhar No Validation Program In python (Chech Aadhar No Is Valid or Not.)

Aadhar  No Validation Program In python (Chech Aadhar No Is Valid or Not.)

# Number should be 12 chars

# Number should not start with 0 or 1

# It should not contain alphabets

num = input("Please enter a 12 digit mobile number: ")

# Check if number length is greater or less then 12

if len(num) > 12 or len(num) < 12:

    print("Aadhar number is not valid (Enter a 12 digit number)")

else:

    # Check if first number is 0 or 1

    if num[0] == '0' or num[0] == '1':

        print("Aadhar number is not valid (Aadhar card number cannot start with 0 or 1)")

    else:

        try:

            num = int(num)

            print("Aadhar number is valid") #this block try if no error

        except: #this block print when try block or statement have an error

            print('Aadhar number is not valid (Aadhar number should not contain any characters)')