Getting started with Python-level three menu

Job Title: Level Three menu

• Job Requirements:

menu = {    'Beijing':{        'Haidian':{            'Five crossing':{                'Soho':{},                'NetEase':{},                'Google':{}            },            'Zhongguancun':{                'Iqiyi Art':{},                'Autohome':{},                'Youku':{},            },            'on the ground':{                'Baidu':{},            },        },        'changping':{            'Shahe':{                'Uniqlo':{},                'Beihang University':{},            },            'Tin Tong Court':{},            'Huilongguan':{},        },        'Chaoyang':{},        'Dongcheng':{},    },    'Shanghai':{        'Minhang':{            "People's square":{                'Fried Chicken Shop':{}            }        },        'Zhabei':{            'train station':{                'Ctrip':{}            }        },        'Pudong':{},    },    'Shandong':{},}

Requirements: You can choose to go to each submenu from any level back to the previous layer you can exit the program from any level required new knowledge points: List, dictionary

Basic version:

 whileTrue: forIinchMenu:Print(i) Province= Input ("Please select province: (press Q to exit)")    ifProvince = ='Q': Exit ()Else:        Print('Input Error')    ifProvinceinchMenu: whileTrue: forIinchMenu[province]:Print(i) City= Input ("Please select city: (Press Q to exit, Q to return)")            ifCity = ='Q': Exit ()ifCity = ='Q':                 Break            Else:                Print('Input Error')            ifCityinchMenu[province]: whileTrue: forIinchMenu[province][city]:Print(i) County= Input ("Please select a district or county: (press Q to exit, Q to return)")                    ifCounty = ='Q': Exit ()ifCounty = ='Q':                         Break                    Else:                        Print('Input Error')                    ifCountyinchMenu[province][city]: whileTrue: forIinchMenu[province][city][county]:Print(i) Choice= Input ('Q Exit, Q return:')                            ifChoice = ='Q': Exit ()ifChoice = ='Q':                                 Break                            Else:                                Print('Input Error')

Installed Force version:

Rank =Menulast_rank= [] whileTrue: forIinchrank:Print(i) Choice= Input (':'). Strip ()ifChoiceinchrank:last_rank.append (rank)#Add the current menu to the listRank = Rank[choice]#go to the next level menu    elifChoice = ='b':        ifLen (last_rank)! =0:rank= Last_rank.pop ()#deletes the last element of the list, thus returning to the previous layer    elifChoice = ='Q': Exit ()

The innermost and outermost layers can also be added to the corresponding hints.

Getting started with Python-level three menu