用python编写一个学生管理系统

好的，下面是一个简单的学生管理系统的Python代码演示：

class Student:
    def __init__(self, name, age, gender, grade):
        self.name = name
        self.age = age
        self.gender = gender
        self.grade = grade

class StudentSystem:
    def __init__(self):
        self.students = []

    def add_student(self):
        name = input("请输入学生姓名：")
        age = input("请输入学生年龄：")
        gender = input("请输入学生性别：")
        grade = input("请输入学生成绩：")
        student = Student(name, age, gender, grade)
        self.students.append(student)
        print("添加成功！")

    def search_student(self):
        name = input("请输入要查找的学生姓名：")
        for student in self.students:
            if student.name == name:
                print("姓名：{}\n年龄：{}\n性别：{}\n成绩：{}".format(student.name, student.age, student.gender, student.grade))
                return
        print("未找到该学生！")

    def remove_student(self):
        name = input("请输入要删除的学生姓名：")
        for student in self.students:
            if student.name == name:
                self.students.remove(student)
                print("删除成功！")
                return
        print("未找到该学生！")

    def show_all_students(self):
        for student in self.students:
            print("姓名：{}\n年龄：{}\n性别：{}\n成绩：{}".format(student.name, student.age, student.gender, student.grade))

    def run(self):
        while True:
            print("请选择操作：\n1.添加学生\n2.查找学生\n3.删除学生\n4.显示所有学生\n5.退出系统")
            choice = input()
            if choice == "1":
                self.add_student()
            elif choice == "2":
                self.search_student()
            elif choice == "3":
                self.remove_student()
            elif choice == "4":
                self.show_all_students()
            elif choice == "5":
                print("谢谢使用！")
                break
            else:
                print("输入有误，请重新输入！")

if __name__ == '__main__':
    student_system = StudentSystem()
    student_system.run()

这个学生管理系统包含了添加学生、查找学生、删除学生、显示所有学生等功能。你可以根据自己的需求对这个代码进行修改和完善。