Question

尝试使用OptionMenu信息中的信息循环列表当我尝试循环时出现错误：

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python34\lib\tkinter\__init__.py", line 1533, in __call__
    return self.func(*args)
  File "C:\Users\Dominic\Desktop\Homework creator\The accuall program.py", line 79, in create_button
    selecting_qs()
  File "C:\Users\Dominic\Desktop\Homework creator\The accuall program.py", line 88, in selecting_qs
    if dif == main_list[n][1]:
TypeError: list indices must be integers, not list

我的列表由数字和字母组成，所以我不确定我的选项菜单是否必须是intiger或字符串才能搜索列表中的特定部分。这是代码：

def selecting_qs():
    main_list =  main_file_info()
    dif = difficulty.get()
    for n in main_list:
        if dif == main_list[n][1]:
            print(main_list[n][1])



#delating empty strings and /n from list
def rm(list_):
    return [x for x in list_ if x != '\n' and x != ' ']

#main list order:
#Question ID  ,  Difficulty  ,  Topic  ,  Answer ID  ,  Picture ID  ,  Frequency 
def main_file_info():
    main_list=[]
    main_file = open("main_file.txt","r")
    main_file_info=main_file.readlines()
    for line in main_file_info:
        main_list.append(rm(line.split("@")))
    main_file.close()
    return(main_list)

Answer 1

您将获得带有 for main_list 中的n的项目列表，并将结果用作同一列表中的索引。如果列表中的项目是字符串或列表，则会出现错误。尝试使用以下代码：

def selecting_qs():
    main_list =  main_file_info()
    dif = difficulty.get()
    resp = []
    for n in main_list:
        if dif == n[1]:
            resp.append(n[1])
    return resp

尝试使用OptionMenu信息中的信息循环列表

1 个答案: