New submission from STINNER Victor <victor.stin...@gmail.com>: There are various ways to convert a Python int/float to a C time_t, timeval or timespec structure. Attached patch factorize code by adding functions to convert a Python object to a C type (time_t, timeval or timespec).
My patch changes how datetime rounds microsecond: round towards zero instead of rounding to nearest with ties going away from zero. I chose this rounding method because it is the method used by int(float) and int(time.time()) is a common in programs (more than round(time.time()). Rounding towards zero avoids also producing timestamps in the future. On overflow, an OverflowError is now raises instead of a ValueError. I prefer OverflowError over ValueError because it is an implementation detail. For example, time_t is 32 bits on Linux 32 bits, 64 bits on Linux 64 bits or on Windows (32 or 64 bits). PyTime_ObjectToXXX() functions are part of Python and so can be used by the posix, time, datetime and select modules. The patch removes _time.c, _time.h and timefunc.h because these files were only used for one function (_PyTime_DoubleToTime_t) which is no more used and it required to link a module to _time.c to get this function. -- If it is a problem to replace ValueError with OverflowError for backward compatibility, it is easy to adapt the patch to raise ValueError instead. timedelta*float and timedelta/float rounding method may also be changed. ---------- components: Library (Lib) files: pytime.patch keywords: patch messages: 154811 nosy: belopolsky, georg.brandl, gregory.p.smith, haypo priority: normal severity: normal status: open title: Factorize code to convert int/float to time_t, timeval or timespec versions: Python 3.3 Added file: http://bugs.python.org/file24716/pytime.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue14180> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
