使用python写一个学生管理系统，增删改查和排序

好的，我可以帮你写一个基本的学生管理系统，包括增删改查和排序功能。以下是代码实现：

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

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

    def add_student(self, student):
        self.students.append(student)

    def remove_student(self, name):
        for student in self.students:
            if student.name == name:
                self.students.remove(student)

    def update_student(self, name, age, gender, grade):
        for student in self.students:
            if student.name == name:
                student.age = age
                student.gender = gender
                student.grade = grade

    def search_student(self, name):
        for student in self.students:
            if student.name == name:
                return student
        return None

    def sort_students(self, key):
        if key == 'name':
            self.students.sort(key=lambda x: x.name)
        elif key == 'age':
            self.students.sort(key=lambda x: x.age)
        elif key == 'gender':
            self.students.sort(key=lambda x: x.gender)
        elif key == 'grade':
            self.students.sort(key=lambda x: x.grade)

# 测试代码
if __name__ == '__main__':
    manager = StudentManager()

    # 添加学生
    manager.add_student(Student('Tom', 18, 'Male', 90))
    manager.add_student(Student('Lily', 17, 'Female', 85))
    manager.add_student(Student('Lucy', 19, 'Female', 95))

    # 查找学生
    tom = manager.search_student('Tom')
    print(tom.name, tom.age, tom.gender, tom.grade)

    # 修改学生信息
    manager.update_student('Tom', 19, 'Male', 92)
    tom = manager.search_student('Tom')
    print(tom.name, tom.age, tom.gender, tom.grade)

    # 删除学生
    manager.remove_student('Lily')
    for student in manager.students:
        print(student.name, student.age, student.gender, student.grade)

    # 按照姓名排序
    manager.sort_students('name')
    for student in manager.students:
        print(student.name, student.age, student.gender, student.grade)

这个学生管理系统使用了类和列表来存储学生信息，并提供了增删改查和排序功能。你可以根据自己的需求来修改代码。希望对你有所帮助。