python--Implementation of Level three menu selection (original)

#coding: utf-8dict={' Beijing ': {' haidingqu ': [' Qinghe ', ' Keji '], ' chaoyangqu ': [' Q ', ' W ']}, ' Shandong ': {' liaochen ': [' Chiping ', ' Yanggu '], ' Dezhou ': [' e ', ' R ']}}for index,i in Enumerate (dict):        #首先循环显示一级菜单   print index,i,   print ' Exit Q '        #后补上的退出功能, added to the dictionary to show the trouble, simply first display, in the submenu of the exit function through the individual variable assignment implementation exit, A= '!q '        #退出变量赋值, value you casually up, as long as you understand while a!= ' Q ':         #判断是否键入了退出字符    title=raw_input (' Enter the city name you want to enter: ')    if Title.isalpha ():         #判断输入的是否是纯字符串       if Dict.has_ Key (title):        #判断键入的值在字典中 for          index,i in enumerate (Dict[title]):             print index,i         #显示输入城市的详细信息          Dict=dict[title]         #当前所在菜单及子菜单赋值       elif title== ' q ':           #判断键入的是不是退出字符           a= ' q '            #赋值, terminating the loop       Else:           print ' input is wrong, please re-enter! '                  elif title== ' q '       : #判断键入的是不是退出字符        a= ' q '          #赋值, terminating the loop        else:   print ' exited '

　　

python--Implementation of Level three menu selection (original)