RuntimeError: Attempttostart anewprocessbefore the currentprocesshas finished its bootstrapping phase. This probably means that you areonWindowsandyou have forgottentousethe proper idiominthe main module:if__name__ == '__main__': freeze_support() ... The"freeze_support()"linecan be omitted...
The"freeze_support()"line can be omittedifthe program isnotgoing to be frozen to produce an executable. 加上if __name__ == '__main__'后,错误消失 importmultiprocessingdefshow_info(name, age):print(name, age)if__name__=='__main__':#以元组方式传参sub_process = multiprocessing.Proces...
current process has finished its bootstrapping phase. This probably means that you are not using fork to start your child processes and you have forgotten to use the proper idiom in the main module: if __name__ == '__main__': freeze_support() ... 1. 2. 3. 4. 5. 6. 7. 8....
1.Process 创建进程的类:Process([group [, target [, name [, args [, kwargs]]]),target表示调用对象,args表示调用对象的位置参数元组,kwargs表示调用对象的字典,name为别名,group实质上不使用。 方法:is_alive()、join([timeout])、run()、start()、terminate()。其中,start()启动某个进程。join(time...
RuntimeError:Anattempthasbeenmadetostartanewprocessbeforethecurrentprocesshasfinisheditsbootstrappingphase.Thisprobablymeansthatyouarenotusingforktostartyourchildprocessesandyouhaveforgottentousetheproperidiominthemainmodule:if__name__=='__main__':freeze_support()...The"freeze_support()"linecan...
在编程时遇见错误信息在所难免，Python中会也有很多种错误信息，常见的两种就是语法错误和逻辑错误，逻辑...
要想解决这个问题并不复杂,只需要导入和调用标准库multiprocessing中的函数freeze_support即可,把上面的程序修改如下: 然后重新打包并运行程序,打包后的exe程序就可以正常运行了。 经过修改以后,打包后的程序看上去似乎是正常执行的,但实际与直接执行源程序的结果并不完全相同。
内容提示: python 进程池 multiprocessing.Pool 运行错误:The freeze_support() line can be omitted if the program is not g 测试代码如下: 原文:https://blog.csdn.net/xiemanr/article/details/71700531 # -*- coding: utf-8 -*- import multiprocessing import time def func(msg): print('msg: ', ...
from multiprocessingimportProcess,Pool,freeze_supportimporttime defFoo(i):time.sleep(2)returni+100defBar(arg):print('-->exec done:',arg)if__name__=='__main__':freeze_support()pool=Pool(3)foriinrange(10):pool.apply_async(func=Foo,args=(i,),callback=Bar)# 异步#pool.apply(func=Foo...
我想,freeze这个指的就是Windows下把Python程序封存打包为exe程序。这里会影响到multiprocessing中spawn这种启动方式。因为Python程序打包后,它是直接启动它那个应用程序,而不用再依赖系统安装的Python解释器。这种方式运行的Python,找不到解释器,multiprocessing启动进程的spawn模式就不能用标准的方式工作。