Finding the sum of all even numbers upto a given number

How to find the sum of all even numbers upto a given number in Python ?

To find the sum of all even numbers upto a given number we can use the following python code. 

#taking a number from user upto which sum is to be find.

n = int(input("enter a number"))

#setting the base value of sum

sum = 0

#setting the range

for i in range (1,n+1):

#checking for even number in range

if i % 2 == 0:

#incrementing the value of sum

sum = sum + i

#printing sum

print (sum)