请尝试以下示例：
import subprocess
proc = subprocess.Popen(['/bin/bash'], stdin=subprocess.PIPE, stdout=subprocess.PIPE)
stdout = proc.communicate('ls -lash')
print stdout
您必须阅读有关stdin，stdout和stderr的更多信息。看起来不错的演讲：http：//www.doughellmann.com/PyMOTW/subprocess/
另一个例子：
>>> process = subprocess.Popen(['/bin/bash'], shell=False, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
>>> process.stdin.write('echo it works!\n')
>>> process.stdout.readline()
'it works!\n'
>>> process.stdin.write('date\n')
>>> process.stdout.readline()
'wto, 13 mar 2012, 17:25:35 CET\n'
>>>
602392714
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