python实现学生管理系统（最简版）

def print_menue(): print("----------") print("学生管理系统") print("1:添加学生") print("2:删除学生") print("3:修改学生") print("4:查询学生") print("5:显示所有学生") print("6:退出系统") print("-----------") # 列表存储多个学生字典 student_info = [{"name": "gcl", "tel": "110", "QQ": "250"}] # 字典存储一个学生信息 student_message = {} def add_info(): name = input("输入姓名：") tel = input("输入电话：") qq = input("输入QQ号：") global student_message student_message["name"] = name student_message["tel"] = tel student_message["QQ"] = qq global student_info # 查重 for i in student_info: # 通过i取出列表中的每个元素 if i["name"] == name and i["tel"] == tel: print("信息重复!") return # 将信息添加到列表中 student_info.append(student_message) print("添加成功！") def search_info(): name = input("输入姓名：") flag = 0 for i in student_info: if i["name"] == name: print("name:", i["name"]) print("tel:", i["tel"]) print("QQ:", i["QQ"]) flag = 1 if flag == 0: print("未查询到相关信息！") def del_info(): name = input("输入待删除人姓名：") tel = input("输入待删除人电话号码：") # for-else用法 for i in student_info: if i["name"] == name and i["tel"] == tel: # remove是按照值删除 student_info.remove(i) break # 此处的else和for对应使用 # for循环使用break退出后就不执行else了 else: print("未查询到对应学员！") def modifty_info(): name = input("输入姓名：") tel = input("输入电话号码：") flag = 0 for i in student_info: # 因为地址一样所以可以牵连列表内数据一起改动。 if i["name"] == name and i["tel"] == tel: name = input("输入修改后的姓名：") tel = input("输入修改后的电话号码：") i["name"] = name i["tel"] = tel print("修改成功") break else : print("查无此人！") def print_all_info(): for i in student_info: print("name tel QQ") print("%s %s %s" % (i["name"], i["tel"], i["QQ"])) def main(): # 程序入口 while True: print_menue() num = int(input("输入需要的功能:")) if num == 1: add_info() elif num == 2: del_info() elif num == 3: modifty_info() elif num == 4: search_info() elif num == 5: print_all_info() elif num == 6: print("再见！") break else: print("输入错误") input("~~~~输入回车继续~~~~") # 程序开始 main()