python列表使用实现名字管理系统

 # 名字管理系统 列表的使用 print("="*50) print("1:添加名字") print("2:修改名字") print("3:查询名字") print("4:删除名字") print("5:退出") print("="*50) names = [] while True: num = int(input("请输入要操作的序号：")) # input获取到的是str，要转换为Int if num == 1: name_add = input("请输入要添加的名字：") names.append(name_add) print(names) elif num == 2: name_edit1 = input("请输入要修改的原始名字") # 法一： # if name_edit1 in names: # for i in range(len(names)): # if name_edit1 == names[i]: # name_edit2 = input("请输入要修改为的名字：") # names[i] = name_edit2 # print("修改成功！") # else: # print("查无此人") # 法二： find_name = 0 # 默认没找到 for i in range(len(names)): if name_edit1 == names[i]: name_edit2 = input("请输入要修改为的名字：") names[i] = name_edit2 print("修改成功！") find_name = 1 if find_name = 0: print("查无此人") elif num == 3: name_select = input("请输入要查询的名字：") if name_select in names: print("找到了要查找的人") else: print("查无此人") elif num == 4: name_del = input("请输入要进行删除的名字：") if name_del in names: names.remove(name_del) print("删除成功！") else: print("查无此人，无法进行删除") elif num == 5: break else: print("输入错误！") 

 #打印提示 print("="*50) print("names_manage_systme") print("1、add a new name") print("2、delete a name") print("3、modify a name") print("4、search a name") print("5、quit!") print("="*50) #存储用户姓名 names = [] while True: #获取用户输入 user_input_num = int(input("please input the number you need:")) #功能实现 if user_input_num == 1: #增加 new_name = input("please input the new name that you need to add:") names.append(new_name) print(names) elif user_input_num == 2: #删除 del_name = input("please input the new 来源gaodai#ma#com搞*!代#%^码网name that you need to delete:") names.remove(del_name) print(names) elif user_input_num == 3: #改 modify_name = input("please input the new name that you need to modify:") after_modify_name = input("please input the new name :") length = len(names) modify_name_index = 0 i = 0 while i <length: if modify_name== names[i]: modify_name_index=i break i +=1 names[modify_name_index]=after_modify_name print(names) elif user_input_num== 4: #查找 search_name input the new name that you need to search:") length=len(names) search_name_index=0 0 while < length: 1 -1 #没有找到的话令索引置为-1 print("the index of your is:%d"%search_name_index) 5: #退出 print("quit success!") else: print("input number wrong!\nplease again")