python学生管理系统代码案例

Python 学生管理系统是一个常见的教育领域项目，它通常包括用户管理、课程管理、成绩管理和查询等功能。下面是一个简化的 Python 示例，使用了类和文件操作来实现基本的学生信息和成绩管理：

class Student:
    def __init__(self, id, name, courses={}):
        self.id = id
        self.name = name
        self.courses = courses

    def enroll_course(self, course_id, grade):
        if course_id not in self.courses:
            self.courses[course_id] = grade
        else:
            print("学生已注册该课程")

    def view_grades(self):
        for course_id, grade in self.courses.items():
            print(f"课程 {course_id}: {grade}")


# 读取学生信息
def load_students(filename):
    students = []
    with open(filename, 'r') as file:
        lines = file.readlines()
        for line in lines:
            data = line.strip().split(',')
            id, name = data[:2]
            student = Student(id, name)
            students.append(student)
    return students


# 存储学生信息
def save_students(students, filename):
    with open(filename, 'w') as file:
        for student in students:
            file.write(f"{student.id},{student.name}\n")


# 示例用法
students = load_students('students.txt')
student = students  # 假设已加载一个学生
student.enroll_course(1, 90)  # 注册课程并设置成绩
student.view_grades()

# ... 这里可以添加更多功能，如添加新学生、删除课程等