[Python-Dev] datetime module enhancements (original) (raw)
Christian Heimes lists at cheimes.de
Sun Mar 11 22:56:10 CET 2007
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Jon Ribbens schrieb:
I see you snipped without response my request to back up your claim that "assuming that a date() is a datetime() with a time of midnight will clearly break that logic".
I've another idea. Date and datetime objects are compared by date. The date object for a given date is always smaller than the datetime for the same day - even for midnight. The date 2007-01-02 is smaller than 2007-01-02 00:00:00 but larger than 2007-01-01 24:00:00.
date(2007, 1, 2) < datetime(2007, 1, 2, 0, 0, 0)_ True _date(2007, 1, 2) > datetime(2007, 1, 1, 24, 0, 0) True date(2007, 1, 2) == datetime(2007, 1, 2, 0, 0, 0) False date(2007, 1, 2) in datetime(2007, 1, 2, 0, 0, 0) TypeError(...)
datetime(2007, 1, 2, 0, 0, 0) < date(2007, 1, 2)_ TypeError(...) _datetime(2007, 1, 2, 0, 0, 0) > date(2007, 1, 2) TypeError(...) datetime(2007, 1, 2, 0, 0, 0) == date(2007, 1, 2) False datetime(2007, 1, 2, 0, 0, 0) in date(2007, 1, 2) True
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