Is it possible (and wise) to extend the None-type ?

[Stef Mientki]

Jason Scheirer wrote:
> On Nov 26, 11:40 am, Terry Reedy <tjre... at udel.edu> wrote:
>   
>> Stef Mientki wrote:
>>     
>>> hello,
>>>       
>>> I've the idea that I always have a lot of useless code in my programs,
>>> like the next example.
>>>       
>>>  def _On_Menu_File_Open ( self, event = None ):
>>>    if event :
>>>     event.Skip ()
>>>       
>>> instead of
>>>       
>>>  def _O
>>>       
>>> So I would like to extend the None-type (if that's possible),
>>> with a dummy Skip() method.
>>>       
>> def Skipper(object):
>>      def Skip(): pass
>> skipper = Skipper()
>>
>> def _On_Menu_File_Open ( self, event = skipper ):
>>     event.Skip ()
>>
>> etc.
>>     
>
> I think this methods works best, but quite frankly, if a method is
> only two lines long, then you've likely got a code smell and no amount
> of over-design is going to cover for it.
>   
Sorry I should have said that I only showed the relevant (to this issue) 
part,
and this kind of if statements occurs quit a lot.

Probably I should not say this here on this list,
but to give you the whole truth,
I often forget the if-statement ( because it has really nothing to do 
with the functionality I intend to write),
and then my program crashes (unexpected) :-(

cheers,
Stef