# Author:nadech

info = {

    "stu001":"sjp",

    "stu002":"cxx",

    "stu003":"lsw"

}

print(info)

#########查#######

#确定有这个值才用这种方法

print(info["stu001"])

#安全的获取方法

print(info.get("stu005"))

#判断是否存在

print("stu002" in info)#在python2中与info.has_key("stu002")一样

#########增#######

info["stu004"] ="dyq"

print(info)

#########改#######

info["stu001"] ="sjpppp"

print(info)

##########删######

#info.popitem()这个是随机删除

info.pop("stu001")

print(info)

del info["stu002"]

print(info)

av_dicionary = {

    "europe":{"":["a","b","c"],

               2:["d","e","f"]

              },

    "america":{3:["g","h","i"],

               4:["j","k","l"]

               },

    "tokyo":{6:["m","n","o"],

              7:["p","q","r"]

             }

}

#查

print(av_dicionary["tokyo"][6][0])

print((av_dicionary.get("tokyo")).get(6))

#改

av_dicionary["tokyo"][6][0] = "mmmmmmm"

print(av_dicionary)

#

av_dicionary.setdefault("tokyo","www.baidu.com")

print(av_dicionary)

av_dicionary.setdefault("taiwan",{"wwww.baidu.com":["hahahah","henhaoyong"]})

print(av_dicionary)

info1 = {"s01":"nadech","s02":"aguilera","s03":"lsw"}

print(info1)

info2 = {1:2,"s03":"lswwww",3:4}

print(info2)

info1.update(info2)###跟新字典，存在的key值就将value更新，不存在的就加进去

print(info1)

#将字典转化为列表

print(info1.items())

#初始化字典使用fromkeys,当有多层列表时，它只是这个数据的引用，当修改一个字典的数据时，其他的也都会修改

c = dict.fromkeys([6,7,8],["a",{1:"nadech"},2])

print(c)

c[6][1][1] = "aguilera"

print(c)

####字典的循环

###推荐使用这个，因为更高效

for i in  info1:

    print(i,info1[i])

for i,v in info1.items():

    print(i,v)

# Author:nadech

data = {

    "江苏":{

        "南京":{

            "栖霞":["南邮仙林校区","南师范仙林校区","南财仙林校区"],

            "鼓楼":["紫峰大厦","新街口","湖南路"]

        },

        "苏州":{},

        "无锡":{}

    },

    "河南":{},

    "云南":{}

}

print(data["江苏"]["南京"]["栖霞"])

exit_flag = False

while not exit_flag:

    for i in data:

        print(i)

    #判断输入是否在所存在的省份中

    choice1 = input(">>>请选择省份：")

    if choice1 in data:

        for j in data[choice1]:

            print(j)

        #判断输入是否在所存在的城市中

        choice2 = input(">>>请选择城市：")

        if choice2 in data[choice1]:

            for k in data[choice1][choice2]:

                print(k)

            #判断输入的行政区是否存在

            choice3 = input(">>>请选择行政区：")

            if choice3 in data[choice1][choice2]:

                print(data[choice1][choice2][choice3])

            else:

                print("您的输入有误！")

        else:

            print("您的输入有误！")

    else:

        print("您的输入有误！")