importosdefprint_current_process():print(f"Current process ID:{os.getpid()}")print(f"Current process name:{__name__}")if__name__=="__main__":print_current_process() 1. 2. 3. 4. 5. 6. 7. 8. 在这段代码中,我们首先导入了os模块,然后定义了一个名为print_current_process的函数。...
May引发NotImplementedError(另外os.cpu_count()) multiprocessing.current_process():返回与当前进程相对应的Process对象。 multiprocessing.freeze_support():当使用multiprocessing的程序已冻结以产生Windows可执行文件时,添加支持,需要在之后直接调用此函数_ name _== ‘_ main _’ t0 >主模块的线。 multiprocessing.get...
#开进程的方法一:importtimeimportrandomfrommultiprocessingimportProcessdefpiao(name):print('%spiaoing'%name)time.sleep(random.randrange(1,5))print('%spiao end'%name)p1=Process(target=piao,args=('egon',))#必须加,号p2=Process(target=piao,args=('alex',))p3=Process(target=piao,args=('wupeqi'...
shell process读取到echo hello之后,判断它需要创建一个新的进程来执行这一命令(有些命令不需要创建新的进程,例如export A=1这种设置环境变量的命令,改变的是shell process的状态) shell process通过fork系统调用创建一个子进程,这个子进程与shell process基本一样 shell process开始等待,子进程执行结束后shell process将...
case2: https://blog.csdn.net/jinping_shi/article/details/52433867importmultiprocessingimporttimedeffunc(msg):printmultiprocessing.current_process().name +'-'+ msgif__name__ =="__main__": pool = multiprocessing.Pool(processes=4)# 创建4个进程foriinxrange(10): ...
/usr/bin/env python26#-*- coding:utf-8 -*-frommultiprocessingimportPool,current_processdeftest(x):printcurrent_process().pid, x//获取当前进程的pid,是current_process()的属性returnx + 100deftest2(s):printcurrent_process().pid, sif__name__=="__main__":...
Parentprocess11020childprocessstartRunchildprocess第一个进程(14792)childprocessend 在Windows下Process()必须放在if $$name$$ == '$$main$$':中，否则会报错 RuntimeError:Anattempthasbeenmadetostartanewprocessbeforethecurrentprocesshasfinisheditsbootstrappingphase.Thisprobablymeansthatyouarenotusing...
defworker():print(multiprocessing.current_process().name,"start")time.sleep(1)print(multiprocessing.current_process().name,"end")defworker2():print(multiprocessing.current_process().name,"start")time.sleep(2)print(multiprocessing.current_process().name,"end")if__name__=="__main__":p1=multi...
对于操作系统来说,一个任务就是一个进程(Process),比如打开一个浏览器就是启动一个浏览器进程,打开一个记事本就启动了一个记事本进程,打开两个记事本就启动了两个记事本进程,打开一个Word就启动了一个Word进程。 有些进程还不止同时干一件事,比如Word,它可以同时进行打字、拼写检查、打印等事情。在一个进程内部...
Process-Based Version Up to this point, all of the examples of concurrency in this tutorial ran only on a single CPU or core in your computer. The reasons for this have to do with the current design of CPython and something called the Global Interpreter Lock, or GIL. This tutorial won’...