[issue19575] subprocess.Popen with multiple threads: Redirected stdout/stderr files still open after process close

[Bernt Røskar Brenna]

Bernt Røskar Brenna added the comment:

And here's a function that does not require pywin32:

def open_noinherit_ctypes(*args, **kwargs):
    HANDLE_FLAG_INHERIT = 1

    import msvcrt
    from ctypes import windll, WinError
    fp = open(*args, **kwargs)
    if not 
windll.kernel32.SetHandleInformation(msvcrt.get_osfhandle(fp.fileno()), 
HANDLE_FLAG_INHERIT, 0):
        raise WinError()
    return fp

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