datetime objects and __new__()

[Peter Otten]

peter wrote:

>> >>> from datetime import *
>> >>> class TS(datetime):
>>
>> ...     def __new__(cls, ts):
>> ...             return datetime.fromtimestamp(ts)
>> ...>>> TS(0)
>>
>> datetime.datetime(1970, 1, 1, 1, 0)
>>
>> works super() would be the most likely culprit.
> 
> Yes, that works, except the returned object is (unsurprisingly) a pure
> datetime instance, which means I cannot access any other attributes I
> defined on my class.

How about

import datetime

class DT(datetime.datetime):
    def __new__(cls, *args):
        if len(args) == 1:
            return cls.fromtimestamp(args[0])
        return datetime.datetime.__new__(cls, *args)

then?

Peter