-
-
Save XiaochenCui/7a2a080ccfcf6a9b47e9b54bb56006db to your computer and use it in GitHub Desktop.
My solution to Excercise #2 at http://krondo.com/our-eye-beams-begin-to-twist/
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| # -*- coding: utf-8 -*- | |
| from twisted.internet.task import LoopingCall | |
| class Countdown(object): | |
| _instances = set() | |
| def __init__(self, count_to): | |
| self.counter = count_to | |
| self.loop_call = LoopingCall(self.count) | |
| Countdown._instances.add(self) | |
| def start(self, delay): | |
| self.loop_call.start(delay) | |
| def count(self): | |
| # 如果计数完成 | |
| if self.counter == 0: | |
| # 从_instances中移除self | |
| Countdown._instances.remove(self) | |
| # 如果_instance为空，停止rector | |
| if not Countdown._instances: | |
| reactor.stop() | |
| # 停止当前loop_call | |
| self.loop_call.stop() | |
| elif self.counter: | |
| print id(self), ':', self.counter | |
| self.counter -= 1 | |
| from twisted.internet import reactor | |
| print 'Start!' | |
| Countdown(8).start(1) | |
| Countdown(10).start(0.5) | |
| Countdown(5).start(1.5) | |
| reactor.run() | |
| print 'Stop!' |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment