子进程。打开尝试写入不存在的管道

人气:180 发布:2023-01-03 标签: python subprocess popen

问题描述

为什么以下选项不起作用?

import subprocess

process = subprocess.Popen('cmd.exe', shell=False, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=None)

我得到的输出如下:

The process tried to write to a nonexistent pipe.
The process tried to write to a nonexistent pipe.
The process tried to write to a nonexistent pipe.
The process tried to write to a nonexistent pipe.
The process tried to write to a nonexistent pipe.

之后,该进程终止,不会出现错误。我正在运行Windows 7。

推荐答案

尝试:

import subprocess
subprocess.run(["echo", "Hello, world!"], shell=True)

这使用默认的stdout和stderr,而不是创建管道。

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