On 4 September 2013 11:42, eryksun <eryk...@gmail.com> wrote: >>> si = subprocess.STARTUPINFO() >>> si.dwFlags |= subprocess.STARTF_USESHOWWINDOW >>> si.wShowWindow = subprocess.SW_HIDE >> >> Do these statements modify module-level state? Or do you need to pass >> startupinfo=si when calling Popen? > > It's a documented option for instances of Popen, to configure a few > fields in the STARTUPINFO struct that gets passed to CreateProcess.
It's not clear from the docs (or your explanation) whether the lines above modify a global STARTUPINFO struct that gives default behaviour to subprocesses or if it is just the way to initialise one that can be passed to Popen or the convenience APIs. I guess the latter in which case it's probably better to be explicit and say: si = subprocess.STARTUPINFO() si.dwFlags |= subprocess.STARTF_USESHOWWINDOW si.wShowWindow = subprocess.SW_HIDE subprocess.check_call(cmdargs, startupinfo=si) Oscar _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
