multiprocessing.cpu_count()返回系统中的CPU数量,此数字不等于当前进程可以使用的CPU数量。可以使用len(os.sched_getaffinity(0))获得可用CPU的数量 multiprocessing.current_process()返回与当前进程对应的Process对象 multiprocessing.freeze_support()为程序打包成exe可执行文件提供支持,在Windows以外的任何操作系统上调用时...
A parallel equivalent of the map() built-in function (it supports only one iterable argument though). It blocks until the result is ready. This method chops the iterable into a number of chunks which it submits to the process pool as separate tasks. The (approximate) size of these chunks...
A parallel equivalent of the map() built-in function (it supports only one iterable argument though). It blocks until the result is ready. This method chops the iterable into a number of chunks which it submits to the process pool as separate tasks. The (approximate) size of these chunks...
注意multiprocessing.Lock() 创建的锁不能传递,需要使用multiprocessing.Manager().Lock()来创建。multiprocessing.Manager()可创建字典,也可创建list,lock,它创建的变量可用于多进程间传递才不会出错。比如以下代码: texts =multiprocessing.Manager().list() lock=multiprocessing.Manager().Lock() pool= multiprocessing....
1 import multiprocessing 2 import time 3 4 pipe = multiprocessing.Pipe() 5 6 def send(pipe): 7 for i in range(5): 8 print("send: %s" % (i,)) 9 pipe.send(i) 10 time.sleep(0.2) 11 12 def recv_1(pipe): 13 while True: ...
multiprocessing.Pipe([duplex]) Returns a pair (conn1, conn2) of Connection objects representing the ends of a pipe. #两个pipe对象。用这两个对象,来互相的交流。 If duplex is True (the default) then the pipe is bidirectional. If duplex is False then the pipe is unidirectional: conn1 can ...
multiprocessing.Pipe([duplex]) Returns a pair (conn1, conn2) of Connection objects representing the ends of a pipe. #两个pipe对象。用这两个对象,来互相的交流。 If duplex is True (the default) then the pipe is bidirectional. If duplex is False then the pipe is unidirectional: conn1 can ...
Python multiprocessing tutorial is an introductory tutorial to process-based parallelism in Python. The multiprocessing module allows the programmer to fully leverage multiple processors on a given machine.
Openurlin a new page (“tab”) of the default browser, if possible, otherwise equivalent toopen_new(). New in version 2.5. webbrowser.get([name]) Return a controller object for the browser typename. Ifnameis empty, return a controller for a default browser appropriate to the caller’s ...
from multiprocessing import Process import os def work(): print('hello') if __name__ == '__main__': #在主进程下开启线程 t=Thread(target=work) t.start() print('主线程/主进程') ''' 打印结果: hello 主线程/主进程 ''' #在主进程下开启子进程 ...