subprocess.Popen 和 os.system 的区别 [英] Difference between subprocess.Popen and os.system

问题描述

subprocess.Popen() 和 os.system() 有什么区别?

推荐答案

如果您查看 Python 文档的 subprocess 部分，您会注意到有一个示例说明如何将 os.system() 替换为 subprocess.Popen():

If you check out the subprocess section of the Python docs, you'll notice there is an example of how to replace os.system() with subprocess.Popen():

sts = os.system("mycmd" + " myarg")

...和...做同样的事情

...does the same thing as...

sts = Popen("mycmd" + " myarg", shell=True).wait()

改进"的代码看起来更复杂，但它更好，因为一旦你知道subprocess.Popen()，你就不需要其他任何东西了.subprocess.Popen() 替换了分散在其他三个 Python 模块中的其他几个工具(os.system() 只是其中之一).

The "improved" code looks more complicated, but it's better because once you know subprocess.Popen(), you don't need anything else. subprocess.Popen() replaces several other tools (os.system() is just one of those) that were scattered throughout three other Python modules.

如果有帮助，请将 subprocess.Popen() 视为非常灵活的 os.system().

If it helps, think of subprocess.Popen() as a very flexible os.system().

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