小编Ben*_*Ben的帖子

我的 Python 脚本包含一个循环，用于subprocess在脚本外部运行命令。每个子进程都是独立的。我监听返回的消息，以防出现错误；我不能忽略子进程的结果。这是没有 asyncio 的脚本（我用 替换了计算量大的调用sleep）：

from subprocess import PIPE  # https://docs.python.org/3/library/subprocess.html
import subprocess

def go_do_something(index: int) -> None:
    """
    This function takes a long time
    Nothing is returned
    Each instance is independent
    """
    process = subprocess.run(["sleep","2"],stdout=PIPE,stderr=PIPE,timeout=20)
    stdout = process.stdout.decode("utf-8")
    stderr = process.stderr.decode("utf-8")
    if "error" in stderr:
        print("error for "+str(index))
    return

def my_long_func(val: int) -> None:
    """
    This function contains a loop
    Each iteration of the loop calls a function
    Nothing is returned
    """
    for index …