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

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