ext_flag = False # file = open("menu",'r',encoding='utf-8') # 打开3级菜单文本文件 # f = file.read() with open('menu','r',encoding='utf-8') as aff: # 打开3级菜单文本文件 f= aff.read() for line in f: # 读取文件中每行信息 file_str = str(f) # 将每行信息转成字符串格式 now_layers = eval(file_str) # 字符串转成字典格式 last_layers = [now_layers] #把字典转成列表 # print(now_layers) # print(last_layers) while not ext_flag: for key in now_layers: print(key) choice = input('>>:').strip() if len(choice) == 0: continue if choice in now_layers: last_layers.append(now_layers) now_layers =now_layers[choice] if choice =='b': if last_layers: now_layers=last_layers[-1] last_layers.pop() if choice == 'q': ext_flag = True
menu文件内容
{
'浙江':{
'杭州':{
'西湖':{
'西溪',
'三墩'},
'滨江':{'滨和':{}, '高新':{}}
},
'丽水':{
'龙泉':{'宝剑':{}, '瓷器':{}},
'青田':{'石雕':{}, '华侨':{}},
'缙云':{'烧饼':{}, '木雕':{}},
},
},
'山东':{
'烟台':{'大海':{}, '日照':{}},
'青岛':{'平度':{}, '黄岛':{}},
'东营':{'利津', '垦利'}
},
'广东':{
'深圳':{'南山':{}, '福田':{}},
'梅州':{'五华':{}, '兴宁':{}},
'佛山':{'三水':{}, '桂城':{}}
}
}