with open('wordlist.txt') as wordList: #open wordlist file
  for word in wordList: #iterate through words in list
    wordTotal = 0
    for c in word.upper(): #iterate through letters in word
      charNum = ord(c)-64 #convert a-z to 1-26
      if charNum >= 1 and charNum <= 26: #ignore non-letters
        wordTotal += charNum #add letter to word total
    if wordTotal == 100:
      print (word)