New submission from rgpitts <richard.pi...@cdl.co.uk>: OS: Windows 2003 Server R2 x64 Standard Edition Python: 2.6.5 MSVC: 9.0 Application Description: Windows service calling Python C API to run algorithm written in Python.
I've been encountering a random application hang when calling the Python C API function PyObject_CallMethod to call a function on a class instance. I've discovered that the C function fwrite in string_print in stringobject.c is blocking after being called multiple times due to print statements in Python code. My application as a Windows service does not have a stdout and fwrite is buffering data before attempting to write it to a non-existent stdout, thus blocking and hanging the service. This isn't an issue when the application has a console window because stdout is available. We are in the process changing the print statements to write to file. Ideally a Python exception needs raising if print cannot write to stdout. ---------- components: Interpreter Core messages: 112768 nosy: rgpitts priority: normal severity: normal status: open title: print statement hangs Windows service type: behavior versions: Python 2.6 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue9503> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
