python - 如何使用子进程popen Python

Question

这个问题在这里已经有了答案:

Why does passing variables to subprocess.Popen not work despite passing a list of arguments? (5 个回答)

关闭 去年。

由于 os.popen 被 subprocess.popen 取代，我想知道如何转换

os.popen('swfdump /tmp/filename.swf/ -d')

到 subprocess.popen()

我试过了:

subprocess.Popen("swfdump /tmp/filename.swf -d")
subprocess.Popen("swfdump %s -d" % (filename))  # NOTE: filename is a variable
                                                # containing /tmp/filename.swf

但我想我没有正确地写出来。任何帮助，将不胜感激。谢谢

Answer 1

subprocess.Popen 接受参数列表:

from subprocess import Popen, PIPE

process = Popen(['swfdump', '/tmp/filename.swf', '-d'], stdout=PIPE, stderr=PIPE)
stdout, stderr = process.communicate()

甚至还有一个 section of the documentation致力于帮助用户从os.popen迁移到subprocess。