Python program to find the largest of three numbers

#!/usr/bin/python
# -*- coding: utf-8 -*-
# Python program to find the largest number among the three input numbers
# change the values of num1, num2 and num3
# for a different result
# uncomment following lines to take three numbers from user
num1 = float(input('Enter first number: '))
num2 = float(input('Enter second number: '))
num3 = float(input('Enter third number: '))
if num1 >= num2 and num1 >= num3:
   largest = num1
elif num2 >= num1 and num2 >= num3:
   largest = num2
else:
   largest = num3
print ('The largest number is', largest)