如何在 Python 中创建子进程? [英] How do I create a subprocess in Python?

问题描述

我想创建一个流程的子流程.

展示如何完成此操作的工作示例是什么?

解决方案

从子流程开始

a> 文档.

如果你想得到输出:

<预><代码>>>>导入子流程>>>output = subprocess.Popen(['uname', '-a'], stdout=subprocess.PIPE).communicate()[0]>>>输出'Linux'

如果你只是想调用而不处理输出:

<预><代码>>>>subprocess.call(['echo', 'Hi'])你好0

subprocess.check_call 是一样的，除了它抛出一个CalledProcessError 以防使用无效参数调用命令.

很好的子流程教程.

I would like to create a subprocess of a process.

What would be a working example which shows how to accomplish this?

解决方案

Start with the subprocess documentation.

If you want to get the output:

>>> import subprocess
>>> output = subprocess.Popen(['uname', '-a'], stdout=subprocess.PIPE).communicate()[0]
>>> output
'Linux'

If you just want to call and not deal with the output:

>>> subprocess.call(['echo', 'Hi'])
Hi
0

subprocess.check_call is the same except that it throws up a CalledProcessError in case the command is called with invalid parameters.

A good subprocess tutorial.

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