Count of UpperCase Letters - python

A string S is passed as the input. The program must print the number of upper case letters in the string S. Input Format: The first line denotes the value of S.Output Format: The first line contains the count of upper case letters in S.

Boundary Conditions: Length of S is from 3 to 100.

Example Input/Output 1: 

Input: ViCtorY

Output: 3

Example Input/Output 2:

Input: zookeeper 

Output: 0

Code:
s=input()

print(sum(1 for i in s if i.isupper()))