学生信息管理系统设计每个学生的信息包括：学号、姓名、性别、出生年月、数学、语文、英语三科成绩、总分。要求系统能够完成信息的一般增、删、改、查功能。python

代码实现：

class Student:
    def __init__(self, sid, name, gender, birth, math, chinese, english):
        self.sid = sid
        self.name = name
        self.gender = gender
        self.birth = birth
        self.math = math
        self.chinese = chinese
        self.english = english

    def total_score(self):
        return self.math + self.chinese + self.english

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

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

    def remove_student(self, sid):
        for student in self.students:
            if student.sid == sid:
                self.students.remove(student)
                return True
        return False

    def modify_student(self, sid, name=None, gender=None, birth=None, math=None, chinese=None, english=None):
        for student in self.students:
            if student.sid == sid:
                if name is not None:
                    student.name = name
                if gender is not None:
                    student.gender = gender
                if birth is not None:
                    student.birth = birth
                if math is not None:
                    student.math = math
                if chinese is not None:
                    student.chinese = chinese
                if english is not None:
                    student.english = english
                return True
        return False

    def query_student(self, sid=None, name=None):
        result = []
        for student in self.students:
            if sid is not None and student.sid == sid:
                result.append(student)
                break
            if name is not None and student.name == name:
                result.append(student)
        return result

    def print_students(self):
        for student in self.students:
            print("{}\t{}\t{}\t{}\t{}\t{}\t{}\t{}\t{}".format(
                student.sid, student.name, student.gender,
                student.birth, student.math, student.chinese,
                student.english, student.total_score()
            ))

可以在交互式命令行下测试使用：

>>> sm = StudentManagement()
>>> s1 = Student("001", "张三", "男", "2000-01-01", 75, 85, 90)
>>> s2 = Student("002", "李四", "女", "2001-02-02", 80, 90, 85)
>>> sm.add_student(s1)
>>> sm.add_student(s2)
>>> sm.print_students()
001	张三	男	2000-01-01	75	85	90	250
002	李四	女	2001-02-02	80	90	85	255
>>> sm.modify_student("002", name="王五", gender="男", chinese=70, english=75)
True
>>> sm.print_students()
001	张三	男	2000-01-01	75	85	90	250
002	王五	男	2001-02-02	80	70	75	225
>>> sm.remove_student("002")
True
>>> sm.print_students()
001	张三	男	2000-01-01	75	85	90	250