How to subclass datetime?

[Tim Peters]

[Jane Austine]
> ...
> For example,
> 
> >>> class mydate(datetime.date):
> 	def abc(self):
> 		print "abc"
> >>> z=mydate(2003,4,14)
> >>> z.abc()
> Traceback (most recent call last):
>   File "<pyshell#6>", line 1, in -toplevel-
>     z.abc()
> AttributeError: 'datetime.date' object has no attribute 'abc'
> >>> type(z)
> <type 'datetime.date'>
>
> ...
>
> I reckon it is not subclassing the datetime.date class in
> its proper definition of subclassing.

Indeed it's not!  That wasn't intended.  I opened a bug report:

    http://www.python.org/sf/720908