Bugs item #1238747, was opened at 2005-07-15 10:31 Message generated for change (Comment added) made by astrand You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1238747&group_id=5470
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Library Group: Platform-specific >Status: Closed >Resolution: Duplicate Priority: 5 Private: No Submitted By: Adam Kerrison (adamk550) Assigned to: Peter Åstrand (astrand) Summary: subprocess.Popen fails inside a Windows service Initial Comment: If you use subprocess.Popen() from within a Windows service and you try to redirect stdout or stderr, the call will fail with a TypeError. The issue appears to be that if you attempt to redirect stdout and/or stderr, the module also needs to set up stdin. Since you haven't specified what to do with stdin, the code simple duplicates the processes stdin handle using GetStdHandle(STD_INPUT_HANDLE) However, a Windows service doesn't have stdin etc so the returned handle is None. This handle is then passed to DuplicateHandle() which fails with the TypeError. A workaround is to explictly PIPE stdin but I have found at least one Windows program (the RCMD.EXE utility) that fails if its stdin is a pipe! (RCMD says "Internal Error 109" ...) The only other workaround is a to explictly open the NUL device and use that for stdin. ---------------------------------------------------------------------- >Comment By: Peter Åstrand (astrand) Date: 2007-01-22 20:33 Message: Logged In: YES user_id=344921 Originator: NO Duplicate of 1124861. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1238747&group_id=5470 _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
