Feature Requests item #1487389, was opened at 2006-05-12 13:13 Message generated for change (Comment added) made by fresh You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=355470&aid=1487389&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: None Status: Open Resolution: None Priority: 5 Submitted By: Chris Withers (fresh) Assigned to: Nobody/Anonymous (nobody) Summary: datetime.time and datetime.timedelta Initial Comment: print datetime.time(hour=0)+datetime.timedelta(hours=1) ...gives... TypeError: unsupported operand type(s) for +: 'datetime.time' and 'datetime.timedelta' Which is a bit frustrating :-/ Does it really need to be this way? Chris ---------------------------------------------------------------------- >Comment By: Chris Withers (fresh) Date: 2006-05-13 15:49 Message: Logged In: YES user_id=24723 Well, I think the OverflowError is perfectly correct, and lets the software author handle that situation in any way they want. That said, you could add a keyword option to the datetime.time constructor to allow it either to wrap round, or raise OverflowError, with the overflow being the default. If I resulted up patches for these, how would I get them into a python release? ---------------------------------------------------------------------- Comment By: Tim Peters (tim_one) Date: 2006-05-12 16:15 Message: Logged In: YES user_id=31435 Since the lack of arithmetic on `time` objects is both intended and documented, this isn't "a bug". I moved this to the Feature Requests tracker. The problem with arithmetic on time objects is that it's not obvious what to do in case of overflow or underflow: wrap around or raise OverflowError? Either way violates _some_ reasonable expectation. Embed your time in a `datetime` object and then you can decide what you want to do. For example, if you want to wrap around, >>> print (datetime.combine(date.today(), time(hour=0)) - timedelta(hours=1)).time() 23:00:00 ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=355470&aid=1487389&group_id=5470 _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
