我想知道如何从索引x到y删除多个值， 这是我目前正在尝试的方法：

first_num = None
second_num = None
while True:
   first_or_last = "first" if first_num is None else "last"
   text = str("Enter the {} index number to start deleting: ").format(first_or_last)
   remove_ftl_input = input(text)
   if first_num is None or second_num is None:
      if remove_ftl_input.isdigit():
         if first_num is None:
            first_num = int(remove_ftl_input)
      elif first_num is not None and second_num is None:
            second_num = int(remove_ftl_input)
      if first_num is not None and second_num is not None:
         for x in range(0,first_num-second_num):
            try:
               # note: every loop index shifts by -1 thats why first-num i assume?
               found_items_list.pop(first_num)
            except IndexError:
               print(str(x) + " was out of reach.")