python練習_module01-1-3級菜單_2

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3級菜單的另一種實現方式：迴圈

函數的方式：http://www.cnblogs.com/jailly/p/6709573.html

 

1.先建立一個能夠表明3級目錄結構之間映射關係的字典，然後將其存入一個pickle檔案以便調用

 1 import pickle 2  3 dir_windows = [‘explorer.exe‘] 4 part_C = {‘windows‘: dir_windows} 5  6 dir_setup = [‘rhel-7.3.iso‘, ‘SecureCRT6.rar‘] 7 dir_program = [‘putty.exe‘, ‘PhotoshopCC2016.exe‘] 8 part_D = {‘setup‘: dir_setup, ‘program‘: dir_program} 9 10 dir_video = [‘君の名は.mp4‘]11 dir_game = [‘NieR: Automata‘, ‘Sid Meier\‘s Civilization VI‘]12 part_E = {‘video‘: dir_video, ‘game‘: dir_game}13 14 root = {‘C‘: part_C, ‘D‘: part_D, ‘E‘: part_E}15 16 with open(‘dir.pkl‘,‘wb‘) as f:17     pickle.dump(root,f)

 

2.主程式

 1 #! /usr/bin/env python3 2 # -*- coding:utf-8 -*- 3 # Author:Jailly 4  5 ‘‘‘ 6     以3級的目錄結構類比三級菜單，目錄結構如下：： 7         C 8             windows 9                 explorer.exe10         D11             setup12                 rhel-7.3.iso13                 SecureCRT6.rar14             program15                 putty.exe16                 PhotoshopCC2016.exe17         E18             video19                 君の名は.mp420             game21                 NieR: Automata22                 Sid Meier‘s Civilization VI 23 ‘‘‘24 25 import pickle26 27 def main(root):28     n = 129     select1 = None30     select2 = None31     select3 = None32 33     while n:34         if n == 1:35             if not select1:36                 print(‘歡迎進入%d級目錄，該目錄下有如下目錄/檔案：%s‘% (n,‘、‘.join(sorted(root.keys()))))37                 select1 = input(‘請選擇您想要執行的操作：(“[目錄名]”：進入目錄；“q”：退出)：‘)38 39             if select1 in root:40                 n = 241                 continue42             elif select1 == ‘q‘:43                 break44             else:45                 select1 = input(‘指令輸入錯誤，請重新輸入:‘)46                 continue47 48         elif n == 2:49             if not select2:50                 print(‘歡迎進入%d級目錄，該目錄下有如下目錄/檔案：%s‘%(n,‘、‘.join(sorted(root[select1].keys()))))51                 select2 = input(‘請選擇您想要執行的操作：(“[目錄名]”：進入目錄；“b”，返回上一級；“q”：退出)：‘)52 53             if select2 in root[select1]:54                 n = 355                 continue56             elif select2 == ‘b‘:57                 n = 158                 continue59             elif select2 == ‘q‘:60                 break61             else:62                 select2 = input(‘指令輸入錯誤，請重新輸入：‘)63                 continue64 65         elif n == 3:66             if not select3:67                 print(‘歡迎進入%d級目錄，該目錄下有如下目錄/檔案：%s‘ % (n, ‘、‘.join(sorted(root[select1][select2]))))68                 select3 = input(‘請選擇您想要執行的操作：(“b”，返回上一級；“q”：退出)：‘)69 70             if select3 == ‘b‘:71                 n = 272                 continue73             elif select3 == ‘q‘:74                 break75             else:76                 select3 = input(‘指令輸入錯誤，請重新輸入：‘)77                 continue78 79 if __name__ == ‘__main__‘:80 81     with open(‘dir.pkl‘, ‘br‘) as f:82         root = pickle.load(f)83 84     main(root)

 

python練習_module01-1-3級菜單_2