缥缈映苍穹 - 博客园

Python 进程池的异步方法

摘要： import time from multiprocessing import Process,Pool def f1(n): time.sleep(0.5) # print(n) return n*n if __name__ == '__main__': pool = Pool(4) res_list = [] for i in ran... 阅读全文

posted @ 2019-01-14 16:35 缥缈映苍穹阅读(193) 评论(0) 推荐(0)

Python 进程池的同步方法

摘要： import time from multiprocessing import Process,Pool def f1(n): time.sleep(1) #print(n) return n*n if __name__ == '__main__': pool = Pool(4) for i in range(10): print("x... 阅读全文

posted @ 2019-01-14 16:32 缥缈映苍穹阅读(409) 评论(0) 推荐(0)

Python 测试多进程的时间

摘要： import time from multiprocessing import Process def f1(): time.sleep(2) print("子进程1号") def f2(): time.sleep(3) print("子进程2号") if __name__ == '__main__': s = time.time() p = P... 阅读全文

posted @ 2019-01-14 16:31 缥缈映苍穹阅读(288) 评论(0) 推荐(0)

Python 进程池的同步方法和异步方法

摘要： import time from multiprocessing import Process,Pool def f1(n): time.sleep(0.5) # print(n) return n*n if __name__ == '__main__': pool = Pool(4) # pool.apply(f1,args=(2,)) #同步方法 ... 阅读全文

posted @ 2019-01-14 16:31 缥缈映苍穹阅读(308) 评论(0) 推荐(0)

Python 进程池

摘要： import time from multiprocessing import Process,Pool # def f1(n): # time.sleep(1) # print(n) #对比多进程和进程池的效率 def f1(n): for i in range(5): n = n + i if __name__ == '__main__': ... 阅读全文

posted @ 2019-01-14 16:26 缥缈映苍穹阅读(108) 评论(0) 推荐(0)

Python 信号量

摘要： import time import random from multiprocessing import Process,Semaphore def f1(i,s): s.acquire() print("%s男嘉宾到了" % i) time.sleep(random.randint(1,3)) s.release() if __name__ == '__m... 阅读全文

posted @ 2019-01-14 16:24 缥缈映苍穹阅读(68) 评论(0) 推荐(0)

Python 基于时间的进程通信

摘要： import time from multiprocessing import Process,Event def f1(e): time.sleep(2) n = 100 print("子进程计算结果位:",n) e.set() if __name__ == '__main__': e = Event() p = Process(target=f... 阅读全文

posted @ 2019-01-14 16:16 缥缈映苍穹阅读(87) 评论(0) 推荐(0)

摘要： from multiprocessing import Process,Event e = Event() #创建事件对象,这个对象的初识状态为False print('e的状态是:',e.is_set()) print('进程运行到这里了') e.set() #将e的状态改为True print('e的状态是:',e.is_set()) e.clear() #将e的状态改为Fals... 阅读全文

posted @ 2019-01-14 16:13 缥缈映苍穹阅读(85) 评论(0) 推荐(0)

Python 管道

摘要： from multiprocessing import Process,Pipe def f1(conn): from_zhujincheng = conn.recv() print("我是子进程") print("来自主进程的消息:",from_zhujincheng) if __name__ = 阅读全文

posted @ 2019-01-14 16:11 缥缈映苍穹阅读(107) 评论(0) 推荐(0)

Python 精进版SVIP版通过队列实现一个生产者消费者模型

摘要： import time from multiprocessing import Process,Queue,JoinableQueue #生产者 def producer(q): for i in range(10): time.sleep(0.2) s = '大包子%s号'%i print(s+'新鲜出炉,拿去用') q.... 阅读全文

posted @ 2019-01-14 16:10 缥缈映苍穹阅读(95) 评论(0) 推荐(0)