python3: 'where' keyword

[Nick Coghlan]

Paul Rubin wrote:
> AdSR <adsr at poczta.onet.pl> writes:
> 
>>>Killer app for this keyword:
>>>class C(object):
>>>  x = property(get, set) where:
>>>    def get(self):
>>>      return "Silly property"
>>>    def set(self, val):
>>>      self.x = "Told you it was silly"
>>
>>Hey, this is super-elegant!
> 
> 
> Heh, even further:
> 
>     z = C() where:
>        class C(object):
>           ...
> 
> Lets you make anonymous classes and singleton objects.

Here's another nice one if 'where' is added to compound statements as well:

@dbc(pre, post)
def foo():
   pass
where:
   def pre():
     pass
   def post():
     pass

Cheers,
Nick.

-- 
Nick Coghlan   |   ncoghlan at email.com   |   Brisbane, Australia
---------------------------------------------------------------
             http://boredomandlaziness.skystorm.net