利用python写一个学生管理系统 学生的信息有 姓名 年龄 学号 出生日期

好的，下面是一个简单的学生管理系统的代码示例：

class Student:
    def __init__(self, name, age, student_id, birth_date):
        self.name = name
        self.age = age
        self.student_id = student_id
        self.birth_date = birth_date

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

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

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

    def get_student(self, student_id):
        for student in self.students:
            if student.student_id == student_id:
                return student
        return None

    def print_all_students(self):
        for student in self.students:
            print("Name: {}, Age: {}, Student ID: {}, Birth Date: {}"
                  .format(student.name, student.age, student.student_id, student.birth_date))

# 创建一个学生管理系统对象
manager = StudentManager()

# 添加学生
student1 = Student("Tom", 18, "1001", "2003-01-01")
student2 = Student("Jack", 20, "1002", "2001-03-05")
manager.add_student(student1)
manager.add_student(student2)

# 打印所有学生信息
manager.print_all_students()

# 删除学生
manager.remove_student("1001")

# 获取学生信息
student = manager.get_student("1002")
if student:
    print("Student Found: Name: {}, Age: {}, Student ID: {}, Birth Date: {}"
          .format(student.name, student.age, student.student_id, student.birth_date))
else:
    print("Student Not Found.")

这个学生管理系统使用了两个类：一个是 `Student` 类，表示学生信息；另一个是 `StudentManager` 类，表示学生管理系统。`StudentManager` 类中包含了添加、删除、获取学生信息以及打印所有学生信息的方法。你可以通过调用这些方法来管理学生信息。