Python exercise _ module01-1-3 menu _ 2, _ module01-1-3_2

Python exercise _ module01-1-3 menu _ 2, _ module01-1-3_2

Another Implementation Method of Level 3 menus: loop

Function Method: http://www.cnblogs.com/jailly/p/6709573.html

 

1. Create a dictionary that indicates the ing between three levels of directory structures, and store it in a pickle file for calling

1 import pickle 2 3 dir_windows = require 'cmder.exe '] 4 part_C = {'windows': dir_windows} 5 6 dir_setup = ['rhel-7.3.iso', 'SecureCRT6.rar '] 7 dir_program = require 'putty.exe ', 'PhotoshopCC2016.exe '] 8 part_D = {'setup': dir_setup, 'program': dir_program} 9 10 dir_video = 'jun Jun Ming .mp4 '] 11 dir_game = ['nier: A ', '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. Main Program

1 #! /Usr/bin/env python3 2 #-*-coding: UTF-8-*-3 # Author: Jailly 4 5 ''' 6 simulate Level 3 menus with a level 3 directory structure, the directory structure is as follows: 7 C 8 windows 9 explorer.exe 10 D11 setup12 rhel-7.3.iso13 SecureCRT6.rar14 program15 putty.exe 16 PhotoshopCC2016.exe17 E18 video19 は.mp4 20 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 = if not select1: 36 print ('Welcome to the % d directory, which contains the following directory/file: % s' % (n, ','. join (sorted (root. keys () 37 select1 = input ('select the operation you want to perform: ("[directory name]": Enter the Directory; "q": Exit ):') 38 39 if select1 in root: 40 n = 241 continue42 elif select1 = 'q': 43 break44 else: 45 select1 = input ('COMMAND input error, please enter again :') 46 continue47 48 elif n = if not select2: 50 print ('Welcome to the % d directory, which contains the following directory/file: % s' % (n, ','. join (sorted (root [select1]. keys () 51 select2 = input ('select the operation you want to perform: ("[directory name]": Enter the Directory; "B", return to the upper level; "q": Exit): ') 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 ('COMMAND input error, please enter again :') 63 continue64 65 elif n = 3: 66 if not select3: 67 print ('Welcome To The % d directory, which contains the following directories/files: % s' % (n ,','. join (sorted (root [select1] [select2]) 68 select3 = input ('select the operation you want to perform: ("B", return to the upper level; "q ": exit): ') 69 70 if select3 =' B ': 71 n = 272 continue73 elif select3 = 'q': 74 break75 else: 76 select3 = input ('COMMAND input error, please enter again: ') 77 continue78 79 if _ name _ =' _ main __': 80 81 with open ('dir. pkl ', 'br') as f: 82 root = pickle. load (f) 83 84 main (root)