python - Python 中的阻塞子进程函数？

Question

我有一个异步函数被这样调用:

from multiprocessing import Process

def my_function(arg1, arg2):
    print 'Long process begins'

p = Process(target=my_function, args=(arg1, arg2,)).start()

如何进行此阻止？我需要在运行脚本的其余部分之前完成该过程。

Answer 1

使用p.join()

Block the calling thread until the process whose join() method is called terminates or until the optional timeout occurs.

If timeout is None then there is no timeout.

A process can be joined many times.

A process cannot join itself because this would cause a deadlock. It is an error to attempt to join a process before it has been started.