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#网页爬取import urllib,time,geventimport urllib.requestfrom gevent import monkeymonkey.patch_all()#把当前程序的所有IO的操作给我单独的做上标记def f(url): print('GET: %s' % url 阅读全文
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手动切换Greenlet from greenlet import greenlet def test1(): print(12) gr2.switch()#第一次切换 print(34) gr2.switch()#第三次切换 def test2(): print(56) gr1.switch()# 阅读全文
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#进程锁from multiprocessing import Process, Lock#进程锁 def f(l, i): l.acquire() print('hello world', i) l.release() if __name__ == '__main__': lock = Lock( 阅读全文
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Manager： from multiprocessing import Process, Manager import os def f(d, l): d[1] = '1' d['2'] = 2 d[0.25] = None l.append(os.getpid()) print(l) if __ 阅读全文
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from multiprocessing import Process, Queue def f(q): q.put([42, None, 'hello']) if __name__ == '__main__': q = Queue() p = Process(target=f, args=(q,) 阅读全文
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1 import multiprocessing 2 import time,threading 3 4 def threading_run(): 5 print(threading.get_ident())#获取线程ID 6 7 def run(name): 8 time.sleep(2) 9 p 阅读全文
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queue.Queue(maxsize=0) #先入先出，maxsize限制数量 queue.LifoQueue(maxsize=0) #last in fisrt out queue.PriorityQueue(maxsize=0) #存储数据时可设置优先级的队列 Queue.put(item, 阅读全文
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import time,threadingevent = threading.Event()def lighter(): count =0 event.set()#先设置红绿灯,设置一个全局变量标志位 while True: if count >5 and count<10:#改成红灯 event. 阅读全文
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import threading,timedef run(n): lock.acquire()#获取锁 global number number +=1 lock.release()#释放锁 time.sleep(1)#加在释放前会要50秒lock = threading.Lock()#实例numb 阅读全文
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#直接调用import threading,timedef run(n): print('running ...',n) time.sleep(2)t1 = threading.Thread(target=run,args=("test1",))#生成一个线程实例t2 = threading.Thr 阅读全文