Bugs item #1478429, was opened at 2006-04-28 14:37 Message generated for change (Comment added) made by gbrandl You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1478429&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: Python 2.4 Status: Open Resolution: None Priority: 5 Submitted By: Erwin Bonsma (eriban) >Assigned to: Martin v. Löwis (loewis) Summary: datetime.datetime.fromtimestamp ValueError. Rounding error Initial Comment: The function datetime.datetime.fromtimestamp() can throw a ValueError when the timestamp is close to an integer value but not quite due to rounding errors. It then gives the following error: microsecond must be in 0..999999 This can be seen by running the attached code (the values are taken from an actual event log), which gives the following output: 1146227423.0 -> 2006-04-28 14:30:23 1146227448.7 -> 2006-04-28 14:30:48.702000 1146227459.95 -> 2006-04-28 14:30:59.947000 1146227468.41 -> 2006-04-28 14:31:08.409000 1146227501.4 -> 2006-04-28 14:31:41.399000 1146227523.0 -> Error converting 1146227522.99999976 microsecond must be in 0..999999 Admittedly, I can work around the bug in this case, by summing the durations first, and calculating all times from "starttime" directly. Nevertheless, I think this is a bug in datetime, as it should work as long as the input time any floating point value within a given range (based on the date range that is supported). Details of my Python environment: Python 2.4.2 (#1, Feb 6 2006, 13:53:18) [GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-53)] on linux2 Cheers, Erwin ---------------------------------------------------------------------- >Comment By: Georg Brandl (gbrandl) Date: 2006-04-28 17:32 Message: Logged In: YES user_id=849994 Attaching a patch correcting this issue. Please review. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1478429&group_id=5470 _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
