看 模块：下面是一个简单的示例…
from subprocess import Popen, PIPE
process = Popen(["ls", "-la", "."], stdout=PIPE)
(output, err) = process.communicate()
exit_code = process.wait()
如何在python中调用外部程序并检索输出和返回代码？
如何在python中调用外部程序并检索输出和返回代码？
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