团队协作新春采购

import datetime

class Task:
    def __init__(self, description, assignee, due_date):
        self.description = description
        self.assignee = assignee
        self.due_date = due_date
        self.status = "Pending"

    def update_status(self, new_status):
        self.status = new_status

class TaskManager:
    def __init__(self):
        self.tasks = []

    def add_task(self, task):
        self.tasks.append(task)

    def list_tasks(self):
        for task in self.tasks:
            print(f"{task.description} - Assigned to: {task.assignee}, Due: {task.due_date}, Status: {task.status}")

# 示例使用
task_manager = TaskManager()

# 添加任务
task_manager.add_task(Task("采购节日装饰", "张三", datetime.date(2024, 1, 15)))
task_manager.add_task(Task("选购员工礼品", "李四", datetime.date(2024, 1, 20)))

# 更新任务状态
task_manager.tasks[0].update_status("Completed")

# 列出所有任务
task_manager.list_tasks()