third_menu = {
‘北京‘:{
‘海淀‘:{
‘五道口‘:{
‘soho‘:{},
‘网易‘:{},
‘google‘:{}
},
‘中关村‘:{
‘爱奇艺‘:{},
‘汽车之家‘:{},
‘youku‘:{},
},
‘上地‘:{
‘百度‘:{},
},
},
‘昌平‘:{
‘沙河‘:{
‘老男孩‘:{},
‘北航‘:{},
},
‘天通苑‘:{},
‘回龙观‘:{},
},
‘朝阳‘:{},
‘东城‘:{},
},
‘上海‘:{
‘闵行‘:{
"人民广场":{
‘炸鸡店‘:{}
}
},
‘闸北‘:{
‘火车战‘:{
‘携程‘:{}
}
},
‘浦东‘:{},
},
‘山东‘:{},
}
flag = False while not flag: for i in third_menu: print(i) choice1 = input("请选择一级菜单:") if choice1 in third_menu: while not flag: for i in third_menu[choice1]: print("\t",i) choice2 = input("请选择二级菜单:") if choice2 in third_menu[choice1]: while not flag: for i2 in third_menu[choice1][choice2]: print("\t\t",i2) choice3 = input("请输入三级菜单:") if choice3 in third_menu[choice1][choice2]: for i3 in third_menu[choice1][choice2][choice3]: print("\t\t\t",i3) choice4 = input("最后一层，按b返回上一层:") if choice4 == "b": pass elif choice4 == "q": flag = True if choice3 == "b": break elif choice3=="q": flag = True if choice2 == "b": break elif choice2 == "q": flag = True elif choice1 =="q": flag = True
原文：https://www.cnblogs.com/LoveGdx/p/11519341.html
