主运行循环：

import cards_tools

while True:

cards_tools.show_menu()

action_str = input("请输入希望执行的操作：")

# python2.7中raw_input输出str类型，input默认为int类型；Python3 input默认str类型。

print("您选择的操作是【%s】" % action_str)

# print("您选择的操作是【{}】" .format(action_str)) 用format也可实现

if action_str in ["1","2","3"]:

if action_str == "1":

cards_tools.new_cards()

elif action_str == "2":

cards_tools.show_cards()

elif action_str == "3":

cards_tools.search_cards()

elif action_str == "0":

print("欢迎再次使用【名片管理系统】")

break

else:

print("您输入的不正确，请重新输入")

功能模块编写：

card_list = []

#欢迎界面

def show_menu():

print("*"*50)

print("欢迎使用【名片管理系统V1.0】")

print("")

print("1.新增名片\n2.显示全部\n3.查询名片")

#for funct in ["1.新增名片","2.显示全部","3.查询名片"]:

# print(funct)

print("")

print("0.退出系统")

print("*"*50)

#新增名片

def new_cards():

print("="*50)

print("新增名片")

name_str = input("请输入姓名：")

age_str = input("请输入年龄：")

phone_str = input("请输入电话号码：")

qq_str = input("请输入QQ号码：")

card_dict = {"name":name_str,

"age":age_str,

"phone":phone_str,

"qq":qq_str

}

card_list.append(card_dict)

print(card_list)

print("名片添加成功！")

#显示全部名片

def show_cards():

print("=" * 50)

print("显示全部名片")

if len(card_list) == 0:

print("当前没有名片信息，请先新增名片！")

return

for name in ["姓名", "年龄", "电话", "qq"]:

print(name, end="\t\t")

print("")

print("-" * 50)

for card_dict in card_list:

print("%s\t\t%s\t\t%s\t\t%s" %(card_dict["name"],

card_dict["age"],

card_dict["phone"],

card_dict["qq"]))

#查找名片

def search_cards():

print("="*50)

print("查询名片")

find_name = input("请输入要查询的姓名：")

for card_dict in card_list:

if card_dict["name"] == find_name:

print("姓名:%s\n年龄:%s\n电话:%s\nqq:%s" %(card_dict["name"],

card_dict["age"],

card_dict["phone"],

card_dict["qq"]))

deal_card(card_dict)

break

else:

print("抱歉，没有找到%s" %find_name)

#查询名片补充，对找到的名片进行修改或删除

def deal_card(find_dict):

action_str = input("请输入您要执行的操作"

"【1】修改名片 【2】删除名片 【3】返回上级菜单：")

if action_str == "1":

find_dict["name"] = input_card_info(find_dict["name"],"姓名：")

find_dict["age"] = input_card_info(find_dict["age"],"年龄：")

find_dict["phone"] = input_card_info(find_dict["phone"],"电话：")

find_dict["qq"] = input_card_info(find_dict["qq"],"qq：")

print("修改名片成功！")

if action_str == "2":

card_list.remove(find_dict)

print("删除名片成功！")

#修改名片补充，如果用户只修改电话或年龄

def input_card_info (dict_value, tip_message):

result_str =input(tip_message)

if len(result_str) > 0:

return result_str

else:

return dict_value