how to check which number is higher in python

1# Python program to find the largest number among the three input numbers
2
3# change the values of num1, num2 and num3
4# for a different result
5num1 = 10
6num2 = 14
7num3 = 12
8
9# uncomment following lines to take three numbers from user
10#num1 = float(input("Enter first number: "))
11#num2 = float(input("Enter second number: "))
12#num3 = float(input("Enter third number: "))
13
14if (num1 >= num2) and (num1 >= num3):
15   largest = num1
16elif (num2 >= num1) and (num2 >= num3):
17   largest = num2
18else:
19   largest = num3
20
21print("The largest number is", largest)