STINNER Victor added the comment: I didn't read the whole issue, but the following code makes sense.
+try: + import posix +except ImportError: + # Windows has nanosecond utime resolution. + UTIME_EPSILON = 2e-9 +else: + import sysconfig + if 'HAVE_UTIMENSAT' in posix._have_functions: + UTIME_EPSILON = 2e-9 + elif 'HAVE_UTIMES' in sysconfig.get_config_vars(): + UTIME_EPSILON = 2e-6 + else: + UTIME_EPSILON = 1.0 Windows doesn't really have nanosecond resolution: the common Windows unit is 100 ns. See GetFileInformationByHandle() documentation: its BY_HANDLE_FILE_INFORMATION structure has FILETIME fields, and FILETIME uses the 100 ns unit. We might expose this unit (UTIME_EPSILON, in the os module maybe?) as we done for time function with time.get_clock_info(). ---------- nosy: +haypo _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue15745> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
