存储地区编码（相关代码）

# 1101-北京市,1201-天津市,1301-河北省石家庄市,1401-山西太原市
# dict_1 = {"1101":"北京市","1201":"天津市","1301":"河北省石家庄市","1401":"山西省太原市"}
# for key, value in dict_1.items():
#     print(key,value)
# dict_1["1501"] = "内蒙古呼和浩特市"
# print(dict_1)
# num_1 = input("请输入你想删除的省市编码")
# dict_1.pop(num_1)
# print(dict_1)
# num_2 = input("请输入你要修改的省市编码")
# num_3 = input("请输入修改后的编码")
# num_4 = input("请输入修改后的省市")
# dict_1.pop(num_2)
# dict_1[num_3] = num_4
# print(dict_1)
# num_5 = input("请输入想要查询省市的编码")
# print(dict_1.get(num_5))