List append help

[David Lewis]

In article <1058329gsgeq85f at corp.supernews.com>, Bill wrote:

> Thank you, This was really bugging me. To help me understand, do you know
> why the return value was None even though it was added to the list?

It¹s a philosophical decision made throughout Python. When an operation
is destructive (i.e. it changes the object on which it operates rather
than returning a new, changed, object), it returns None to emphasize
the point.

Best,
   David