用python写一个学生信息管理系统输入并存储学生的信息 、修改学生信息 、删除学生信息 、成绩排序、查找学生信息、进行测试

好的，以下是一个简单的学生信息管理系统的代码：

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

class StudentManagementSystem:
    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)
                return True
        return False

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

    def sort_students_by_grade(self):
        self.students.sort(key=lambda x: x.grade, reverse=True)

    def display_students(self):
        print("Name\tAge\tGender\tGrade")
        for student in self.students:
            print(f"{student.name}\t{student.age}\t{student.gender}\t{student.grade}")

if __name__ == "__main__":
    sms = StudentManagementSystem()

    while True:
        print("\nStudent Management System Menu:")
        print("1. Add student")
        print("2. Remove student")
        print("3. Find student")
        print("4. Sort students by grade")
        print("5. Display all students")
        print("6. Quit")

        choice = input("Enter your choice: ")

        if choice == "1":
            name = input("Enter student name: ")
            age = int(input("Enter student age: "))
            gender = input("Enter student gender: ")
            grade = float(input("Enter student grade: "))
            student = Student(name, age, gender, grade)
            sms.add_student(student)
            print(f"{name} has been added to the system.")
        elif choice == "2":
            name = input("Enter student name: ")
            if sms.remove_student(name):
                print(f"{name} has been removed from the system.")
            else:
                print(f"Could not find {name} in the system.")
        elif choice == "3":
            name = input("Enter student name: ")
            student = sms.find_student(name)
            if student:
                print(f"Name: {student.name}")
                print(f"Age: {student.age}")
                print(f"Gender: {student.gender}")
                print(f"Grade: {student.grade}")
            else:
                print(f"Could not find {name} in the system.")
        elif choice == "4":
            sms.sort_students_by_grade()
            print("Students sorted by grade:")
            sms.display_students()
        elif choice == "5":
            print("All students:")
            sms.display_students()
        elif choice == "6":
            print("Goodbye!")
            break
        else:
            print("Invalid choice. Please try again.")

运行代码后，可以按照菜单提示进行操作。可以输入学生的姓名、年龄、性别和成绩，程序会将其保存到系统中。可以根据姓名查找、删除学生信息，也可以对学生信息按成绩排序。最后，可以显示所有学生信息或退出程序。