"If Len(Word) == 0" Code Block in Pig Latin Program

[deanhystad]

It could be that or it could be to just skip any non-alphabetic "words" such as numbers. In "Welcome 2022!" you don't want 2022! to be altered. When this code processes "2022!":

     while len(word) > 0 and not word[0].isalpha():
          prefixNonLetters += word[0]
          word = word[1:]

It will move all the characters from word to prefixNonLetters and you'll end up with prefixNonLetters == "2022!" and word == "". len(word) == 0, so append "2022!" to pigLatin and move on to the next word.