你能有一个没有时间表的积极的发射计划吗？

# 示例：Scrum迭代计划
class Sprint:
    def __init__(self, name, duration_days):
        self.name = name
        self.duration_days = duration_days
        self.tasks = []

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

class Task:
    def __init__(self, description, estimated_hours):
        self.description = description
        self.estimated_hours = estimated_hours
        self.completed = False

# 创建一个迭代
sprint1 = Sprint("Sprint 1", 14)

# 添加任务
task1 = Task("实现用户登录功能", 8)
task2 = Task("设计数据库结构", 6)
sprint1.add_task(task1)
sprint1.add_task(task2)

# 更新任务状态
task1.completed = True

print(f"{sprint1.name} 完成情况：")
for task in sprint1.tasks:
    status = "已完成" if task.completed else "未完成"
    print(f"- {task.description}: {status}")