1

subprocess.run并且不会抑制subinacl.exe实用程序stdout=DEVNULL的所有输出。stderr=STDOUT

>>> # Do not suppress: OK
>>> subprocess.run('subinacl.exe /service "foo" display', shell=True)
foo - OpenService Error : 1060 The specified service does not exist as an installed service.



Elapsed Time: 00 00:00:00
Done:        1, Modified        0, Failed        1, Syntax errors        0
Last Done  : foo
Last Failed: foo - OpenService Error : 1060 The specified service does not exist as an installed service.

CompletedProcess(args='subinacl.exe /service "foo" display', returncode=0)

>>> # Suppress: Some output is still printed
>>> subprocess.run('subinacl.exe /service "foo" display', shell=True, stdout=subprocess.DEVNULL, stderr=subprocess.STDOUT)

Elapsed Time: 00 00:00:00
Done:        1, Modified        0, Failed        1, Syntax errors        0
Last Done  : foo
Last Failed: foo - OpenService Error : 1060 The specified service does not exist as an installed service.

CompletedProcess(args='subinacl.exe /service "foo" display', returncode=0)
>>>

我的猜测是 subinacl.exe 正在调用另一个进程来打印未被抑制的输出。不要让整个流程链的输出保持沉默stdout=DEVNULL？stderr=STDOUT

4

1 回答 1

3

根据 Eryk Sun 的评论，我不得不使用

subprocess.run(
    'subinacl.exe /service "foo" display',
    stdout=subprocess.DEVNULL,
    stderr=subprocess.STDOUT, 
    creationflags=subprocess.CREATE_NO_WINDOW
)
于 2020-06-06T00:49:17.830 回答