老男孩-day1做業二

# coding: gbk
CA_com = {"北京":{"海淀":["百度","搜狐","網易"],"朝陽":["高德","噹噹","獵聘"],"亦莊":["聯通","移動","電信"]},\
"上海":{"黃埔":["阿里","騰訊","攜程"],"靜安":["大衆","巨人","美團"],"虹口":["塊錢","滴滴","優步"]},\
"廣州":{"越秀":["Aten","Raritan","Avocent"],"白雲":["聚美","京東","甲骨文"],"天河":["微軟","臉譜","華爲"]}}
while 1:
    sum = 1    
    list_tem = {}
    for i in CA_com.keys():
        print("%d : %s" % (sum,i)) 
        list_tem[sum] = i
        sum = sum + 1        
    cs_choose = input("請選擇城市(1/2/3):")
    while 1:
        sum1 = 1
        list1_tem = {}
        for j in CA_com[list_tem[int(cs_choose)]].keys():
            print("%d : %s" % (sum1,j))
            list1_tem[sum1] = j
            sum1 = sum1 + 1
        sq_choose = input("請選擇地區(1/2/3,4返回):")
        if sq_choose == "4":
            break
        for k in CA_com[list_tem[int(cs_choose)]][list1_tem[int(sq_choose)]]:
            print("--->： " + k)
        ret = input("按任意鍵返回,回車返回")

字典當中的公司，爲隨意填寫。