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# 1、封装一个menu函数,专门用于打印选择界面菜单 def menu(): print('-' * 40) print('通讯录管理系统V1.0') print('1、添加学员信息') print('2、删除学员信息') print('3、修改学员信息') print('4、查询学员信息') print('5、遍历所有学员信息') print('6、退出系统') print('-' * 40) # 6、定义一个全局变量 info = [] # 5、定义add_student方法,用于添加学员信息 def add_student(): # 定义一个空字典,接收name,age,mobile info_dict = {} # 提示用户输入学员信息name、age、mobile info_dict['name'] = input('请输入学员姓名:') info_dict['age'] = int(input('请输入学员年龄:')) info_dict['mobile'] = input('请输入学员电话:') # 声明全局变量info global info # 追加数据到info列表中 info.append(info_dict) print('学员信息添加成功') print(info) # 7、定义del_student方法,用于删除学员信息 def del_student(): # 提示用户输入要删除学员的信息 name = input('请输入您要删除学员的姓名:') # 判断name是否存在于info中的字典里 [{'name':'yogeek'}, {}, {}] for i in info: if i['name'] == name: info.remove(i) print('学员信息删除成功') print(info) break else: print('暂未查询到您要删除的学员信息') # 8、定义modify_student方法,用于修改学员信息 def modify_student(): # 提示用户输入要修改学员的信息 name = input('请输入您要修改学员的姓名:') global info # 判断name是否存在于info中的字典里 [{'name':'yogeek', 'age':18, 'mobile':'10086'}, {}, {}] for i in info: if i['name'] == name: i['name'] = input('请输入修改后的姓名:') i['age'] = input('请输入修改后的年龄:') i['mobile'] = input('请输入修改后的电话:') print('学员信息修改成功') print(info) break else: print('暂未查询到您要修改的学员信息') # 9、定义show_student方法,用于查询某个学员信息 def show_student(): # 提示用户输入要修改学员的信息 name = input('请输入您要查询学员的姓名:') # 循环遍历,判断name是否存在 for i in info: if i['name'] == name: print(f'学员姓名:{i["name"]},学员年龄:{i["age"]},学员电话:{i["mobile"]}') break else: print('暂未查询到您要查询的学员信息') # 10、定义show_all方法,用于遍历所有学员信息 def show_all(): # 直接对info进行遍历操作 for i in info: print(f'学员姓名:{i["name"]},学员年龄:{i["age"]},学员电话:{i["mobile"]}') # 4、编写死循环,让程序可以一直执行下去 while True: # 打印功能菜单 menu() # 2、使用input方法接收用户的输入信息 user_num = int(input('请输入您要操作的功能序号:')) # 3、使用if多分支条件实现不同的功能 if user_num == 1: # 添加学员信息 add_student() elif user_num == 2: # 删除学员信息 del_student() elif user_num == 3: # 修改学员信息 modify_student() elif user_num == 4: # 查询学员信息 show_student() elif user_num == 5: # 遍历所有学员信息 show_all() elif user_num == 6: # 退出系统 print('感谢您使用通讯录管理系统V1.0') break else: print('信息输入错误,请重新输入...')
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