Eric Snow added the comment:
I'm doing some string-based serialization of datetimes and need to be able to
specify the type somewhat declaratively. So I'm using a datetime subclass.
This is more or less the code I'm using:
class Timestamp(datetime.datetime):
def __new__(cls, raw_value, *args, **kwargs):
if not args and not kwargs:
return cls.fromtimestamp(int(raw_value))
else:
return super(Timestamp, cls).__new__(cls, raw_value,
*args, **kwargs)
def __str__(self):
return str(int(time.mktime(self.timetuple())))
Incidently, the whole equality testing thing didn't actually cause a problem.
It was comparing against the result of `datetime.utcnow()` which has
microseconds (and my Timestamp instance didn't). Clearing out the microseconds
resolved the failure so I wasn't actually bitten by this issue after all.
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