[Datetime-SIG] Calendar vs timespan calculations...

[Ethan Furman]

On 07/30/2015 03:10 PM, Chris Barker wrote:

> By the way -- which __add__ actually does the implementation? datetime's or timedelta's ?

class timedelta:

     def __add__(self, other):
         if isinstance(other, timedelta):
             # for CPython compatibility, we cannot use
             # our __class__ here, but need a real timedelta
             return timedelta(self._days + other._days,
                              self._seconds + other._seconds,
                              self._microseconds + other._microseconds)
         return NotImplemented


timedelta only adds directly to other timedeltas; so datetime is doing the actual addition.

--
~Ethan~