帮我写一篇学生信息管理系统 python代码

好的，以下是一个简单的学生信息管理系统的Python代码，你可以根据自己的需求进行修改和完善：

# -*- coding: utf-8 -*-

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

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

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

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

    def modify_student(self, id, name=None, gender=None, age=None):
        for student in self.students:
            if student.id == id:
                if name:
                    student.name = name
                if gender:
                    student.gender = gender
                if age:
                    student.age = age

    def search_student(self, id):
        for student in self.students:
            if student.id == id:
                return student

    def display_all_students(self):
        for student in self.students:
            print("Name: {}, Id: {}, Gender: {}, Age: {}".format(student.name, student.id, student.gender, student.age))

def main():
    student_manager = StudentManager()

    while True:
        print("1. Add student")
        print("2. Remove student")
        print("3. Modify student")
        print("4. Search student")
        print("5. Display all students")
        print("6. Exit")

        choice = int(input("Please enter your choice: "))

        if choice == 1:
            name = input("Please enter student name: ")
            id = input("Please enter student id: ")
            gender = input("Please enter student gender: ")
            age = input("Please enter student age: ")
            student = Student(name, id, gender, age)
            student_manager.add_student(student)
            print("Add student successfully!")

        elif choice == 2:
            id = input("Please enter student id: ")
            student_manager.remove_student(id)
            print("Remove student successfully!")

        elif choice == 3:
            id = input("Please enter student id: ")
            name = input("Please enter student name (enter nothing to skip): ")
            gender = input("Please enter student gender (enter nothing to skip): ")
            age = input("Please enter student age (enter nothing to skip): ")
            student_manager.modify_student(id, name, gender, age)
            print("Modify student successfully!")

        elif choice == 4:
            id = input("Please enter student id: ")
            student = student_manager.search_student(id)
            if student:
                print("Name: {}, Id: {}, Gender: {}, Age: {}".format(student.name, student.id, student.gender, student.age))
            else:
                print("Student not found!")

        elif choice == 5:
            student_manager.display_all_students()

        elif choice == 6:
            print("Goodbye!")
            break

        else:
            print("Invalid choice, please try again.")

if __name__ == '__main__':
    main()

这个学生信息管理系统包括添加学生、删除学生、修改学生信息、搜索学生信息、显示所有学生信息和退出功能。你可以根据自己的需要增加或删除一些功能。