func_code: def weird_case(some_str):
      some_str = some_str.lower()
      sent = list(some_str)
      i = 0
      while i < len(sent):
          if dentence[i].isalpha() and i % 2 == 0:
              sentence[i] = sent[i].upper()
              i += 1
          i += 1
      return ''.join(sent)