input: def charCodeSum(s):
      """Task
      Write a function that accepts a string and computes the total of ASCII codes of the uppercase characters only.
  
      Examples:
          charCodeSum("") => 0
          charCodeSum("abAB") => 131
          charCodeSum("abcCd") => 67
          charCodeSum("helloE") => 69
          charCodeSum("woArBld") => 131
          charCodeSum("aAaaaXa") => 153
      """
output:     return sum(ord(c) for c in s if c.isupper())