python3之利用字典和列表实现城市多级菜单

利用字典和列表实现城市多级菜单

#coding:utf-8
#利用字典和列表实现城市多级菜单
addrIndex = {"1":"北京","2":"上海","3":"南京","4":"福建"}
addrDict = {"北京":["东城区","西城区","大兴区"],"上海":["黄浦区","长宁区","宝山区"],"南京":["玄武区","秦淮区","六合区"],"福建":["龙岩","泉州"]}
while True:
    i = 1
    #循环打印城市名称
    for cs in addrDict.keys():
        print("%d.%s" %(i,cs))
        i += 1
    choIndex = input("请输入你城市编号：")

    #为每个城市指定编号值，便于判断输入错误和扩展
    if choIndex not in addrIndex.keys():
        print("输入有误！")
        continue
    # print(addrDict[addrIndex[choIndex]])

    while True:
        i = 1
        #根据输入的城市编号，获取城市名称，城市名称直接为addrDict字典的key
        for pq in addrDict[addrIndex[choIndex]]:
            print("%d.%s" %(i,pq))
            i += 1
        pqCho = input("请输入片区编号,输入q返回上级：")

        #输入q跳出
        if pqCho == "q":
            break
        #输入正确的值打印，pqCho.isdigit()用于判断输入非q字符串错误
        elif pqCho.isdigit() and (int)(pqCho)-1>=0 and (int)(pqCho)-1<=len(addrDict[addrIndex[choIndex]])-1:
            print("你选择的是:%s" %(addrDict[addrIndex[choIndex]][(int)(pqCho)-1]))
        else:
            print("输入有误！")
            continue