使用python设计一个简单的学生管理系统代码，包括person，student，course，teacher，admin

好的，下面是一个简单的学生管理系统的Python代码示例，包括Person类、Student类、Course类、Teacher类和Admin类：

class Person:
    def __init__(self, name, age, sex):
        self.name = name
        self.age = age
        self.sex = sex

class Student(Person):
    def __init__(self, name, age, sex, id):
        super().__init__(name, age, sex)
        self.id = id
        self.courses = []

    def add_course(self, course):
        self.courses.append(course)

    def remove_course(self, course):
        self.courses.remove(course)

    def show_all_courses(self):
        print("Courses taken by {}: ".format(self.name))
        for course in self.courses:
            print("Course: {}, Teacher: {}".format(course.name, course.teacher.name))

class Course:
    def __init__(self, name, teacher):
        self.name = name
        self.teacher = teacher
        self.students = []

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

    def remove_student(self, student):
        self.students.remove(student)
        student.remove_course(self)

    def show_all_students(self):
        print("Students taking course {}: ".format(self.name))
        for student in self.students:
            print("Name: {}, Age: {}, Sex: {}, ID: {}".format(student.name, student.age, student.sex, student.id))

class Teacher(Person):
    def __init__(self, name, age, sex, id):
        super().__init__(name, age, sex)
        self.id = id
        self.courses = []

    def add_course(self, course):
        self.courses.append(course)

    def remove_course(self, course):
        self.courses.remove(course)

    def show_all_courses(self):
        print("Courses taught by {}: ".format(self.name))
        for course in self.courses:
            print("Course: {}, Students: {}".format(course.name, len(course.students)))

class Admin:
    def __init__(self):
        self.students = []
        self.teachers = []
        self.courses = []

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

    def remove_student(self, student):
        for course in student.courses:
            course.remove_student(student)
        self.students.remove(student)

    def add_teacher(self, teacher):
        self.teachers.append(teacher)

    def remove_teacher(self, teacher):
        for course in teacher.courses:
            course.teacher = None
        self.teachers.remove(teacher)

    def add_course(self, course):
        self.courses.append(course)

    def remove_course(self, course):
        for student in course.students:
            student.remove_course(course)
        self.courses.remove(course)

    def show_all_students(self):
        print("All students: ")
        for student in self.students:
            print("Name: {}, Age: {}, Sex: {}, ID: {}".format(student.name, student.age, student.sex, student.id))

    def show_all_teachers(self):
        print("All teachers: ")
        for teacher in self.teachers:
            print("Name: {}, Age: {}, Sex: {}, ID: {}".format(teacher.name, teacher.age, teacher.sex, teacher.id))

    def show_all_courses(self):
        print("All courses: ")
        for course in self.courses:
            print("Course: {}, Teacher: {}, Students: {}".format(course.name, course.teacher.name, len(course.students)))

if __name__ == '__main__':
    admin = Admin()

    student1 = Student("Tom", 18, "Male", "001")
    student2 = Student("Jerry", 19, "Female", "002")
    admin.add_student(student1)
    admin.add_student(student2)

    teacher1 = Teacher("John", 35, "Male", "101")
    teacher2 = Teacher("Mary", 30, "Female", "102")
    admin.add_teacher(teacher1)
    admin.add_teacher(teacher2)

    course1 = Course("Math", teacher1)
    course2 = Course("English", teacher2)
    admin.add_course(course1)
    admin.add_course(course2)

    course1.add_student(student1)
    course1.add_student(student2)
    course2.add_student(student1)

    admin.show_all_students()
    admin.show_all_teachers()
    admin.show_all_courses()

    course1.show_all_students()
    teacher1.show_all_courses()

    admin.remove_student(student1)
    admin.show_all_students()
    admin.show_all_courses()

以上代码实现了一个简单的学生管理系统，包含了添加学生、删除学生、添加教师、删除教师、添加课程、删除课程、查看学生、教师、课程等功能。同时，还包含了学生选课、课程添加学生、教师授课、课程添加教师等功能。