python简易成绩管理系统

以下是一个简单的Python成绩管理系统的实现，使用单链表来存储学生信息和成绩：

class Node:
    def __init__(self, name, score, next=None):
        self.name = name
        self.score = score
        self.next = next

class ScoreList:
    def __init__(self):
        self.head = None

    def add(self, name, score):
        node = Node(name, score)
        if self.head is None:
            self.head = node
        else:
            current = self.head
            while current.next is not None:
                current = current.next
            current.next = node

    def remove(self, name):
        if self.head is None:
            return
        if self.head.name == name:
            self.head = self.head.next
            return
        current = self.head
        while current.next is not None:
            if current.next.name == name:
                current.next = current.next.next
                return
            current = current.next

    def find(self, name):
        current = self.head
        while current is not None:
            if current.name == name:
                return current.score
            current = current.next
        return None

    def print_all(self):
        current = self.head
        while current is not None:
            print(current.name, current.score)
            current = current.next

这个成绩管理系统包含了四个方法：add()用于添加学生信息和成绩，remove()用于删除学生信息和成绩，find()用于查找学生的成绩，print_all()用于打印所有学生的信息和成绩。