列表中存放字典的技巧

  1. def add_info():
  2.     """添加信息函数"""
  3.     # 记录信息
  4.     new_id = input("请输入学员id：")
  5.     new_name = input("请输入学员姓名：")
  6.     new_gender = input("请输入学员性别：")
  8.     global student_info  # 声明列表为全局
  9.     # 判断列表中的字典信息
  10.     for i in student_info:
  11.         if new_id == i["id"]:
  12.             print("multi data!")
  13.             return
  15.     # 字典增加数据
  16.     dict_info = {}
  17.     dict_info["id"] = new_id
  18.     dict_info["name"] = new_name
  19.     dict_info["gender"] = new_gender
  20.     student_info.append(dict_info)
  21.     # test
  22.     print(student_info)

列表中删除指定数据的技巧

  1. def del_info():
  2.     """delete info"""
  3.     del_info = input("请输入要删除的学习id：")
  4.     global student_info
  5.     for i in student_info:
  6.         if del_info == i["id"]:
  7.             student_info.remove(i)    # 删除列表中指定数据
  8.             break
  9.     else:
  10.         print("该学员不存在！")