Using dictionaries to write menu programs

Requirements:

1. There are three levels of menu options
2. On each level menu you can go to the next menu, return to the previous level menu, and exit

Code:

1 #!/usr/bin/env python2 #-*-coding:utf-8-*-3 #author:james Tao4 5Data={6     'Beijing':{7         'changping':{8             'Shahe':['Oldboy','Test'],9             'Tin Tong Court':['Chain Home Property','I love my family .']Ten         }, One         'Chaoyang':{ A             'Wangjing':['Mercedes','mo Mo'], -             'Guomao':{'CCIC','HP'}, -             'Dong Zhi men':{'Advent','fetion'} the         }, -         'Haidian':{} -     }, -     'Shandong':{ +         'Texas':{}, -         'Qingdao':{}, +         'Jinan':{} A     }, at     'Guangdong':{ -         'Dongguan':{}, -         'Changshu':{}, -         'Foshan':{} -     } - } in  -flag=True to  +  whileflag: -  the      forIinchData: *         Print(i) $First_choice=input ('Select Enter Next Level menu/Enter Q to exit:')Panax Notoginseng  -     #go to the first level menu the     ifFirst_choiceinchData: +  A          whileflag: the  +              forJinchData[first_choice]: -                 Print('\ t', J) $Second_choice=input ('Select Enter Next Level menu/Enter R to return to previous/input Q exit:') $  -             #go to the second level menu -             ifSecond_choiceinchData[first_choice]: the                  whileflag: - Wuyi                      forZinchData[first_choice][second_choice]: the                         Print('\t\t', Z) -Third_choice=input ('Select Enter Next Level menu/Enter R to return to previous/input Q exit:') Wu  -                     #go to the third level menu About                     ifThird_choiceinchData[first_choice][second_choice]: $                          whileflag: -  -                              forKinchData[first_choice][second_choice][third_choice]: -                                 Print('\t\t\t', K) AFourth_choice=input ('last layer, enter R to return to the previous level/input Q exit:') +  the                             #whether to return to the third level or exit -                             iffourth_choice=='R': $                                  Break the                             eliffourth_choice=='Q': theflag=False the  the                     #whether to return to the second level or exit -                     ifthird_choice=='R': in                          Break the                     elifThird_choice = ='Q': theFlag =False About  the             #whether to return to the first level or exit the             ifsecond_choice=='R': the                  Break +             elifThird_choice = ='Q': -Flag =False the Bayi     #whether to exit the     iffirst_choice=='Q': the          Break

Using dictionaries to write menu programs