subprocess module under python 2.7

[Timothy W. Grove]

I am using the following code to hide the console window when launching
a subprocess under Windows.

startupinfo = subprocess.STARTUPINFO()
startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
startupinfo.wShowWindow = subprocess.SW_HIDE

self.mplayer = Popen(args,
bufsize=0, #unbufferred
stdin=PIPE,
stdout=PIPE,
stderr=PIPE,
close_fds=False,
universal_newlines=True,
startupinfo=startupinfo
)

This worked okay in using the subprocess module under python 2.6, but
under python 2.7 I get the error:

Exception in thread Thread-1:
Traceback (most recent call last):
File "threading.pyo", line 530, in __bootstrap_inner
File "gui\mplayer_ctrl.pyo", line 93, in run
AttributeError: 'module' object has no attribute 'STARTF_USESHOWWINDOW'

Anything changed between python versions to account for this?

Best regards,
Tim