[Python-ideas] change NoneType, NotImplementedType, & ellipses to return the appropriate singleton

Fri Jul 29 19:15:25 CEST 2011

Ethan Furman wrote:
> <class 'NoneType'>
> Traceback (most recent call last):
> File "<stdin>", line 3, in <module>
> TypeError: cannot create 'NoneType' instances
>> I hit this issue when I had a dictionary of types to instantiate, one of 
> which was NoneType.
>> Is there any reason why we shouldn't change these three to produce the 
> singleton instance instead of raising an error?

+0.5
-- 
Steven