[Python-Dev] Issue 2736: datetimes and Unix timestamps

[Antoine Pitrou]

Le 05/06/2012 19:21, Alexander Belopolsky a écrit :
> with timezone.utc added to datetime module
> already the cost of supplying tzinfo to UTC datetime objects is low.

This is nice when your datetime objects are freshly created. It is not 
so nice when some of them already exist e.g. in a database (using an ORM 
layer). Mixing naive and aware datetimes is currently a catastrophe, 
since even basic operations such as equality comparison fail with a 
TypeError (it must be pretty much the only type in the stdlib with such 
poisonous behaviour).

Regards

Antoine.