docs: def string_in_list(tmp_str, strlist):
          # type: (AnyStr, List[AnyStr]) -> bool
          """Is tmp_str in strlist, case insensitive."""
          new_str_list = strlist[:]
          for i, str_in_list in enumerate(new_str_list):
              new_str_list[i] = str_in_list.lower()
          return tmp_str.lower() in new_str_list