[Python-Dev] Re: Sets: elt in dict, lst.include

[Skip Montanaro]

    >> What would break if we decided to simply add __getitem__ (and other
    >> sequence methods) to list object's method table?

    Ping> That would work for lists, but not for any extension types that
    Ping> use the sq_* protocol to behave like sequences.

Could extension writers add those methods to their modules?

I know I'm really getting off-topic here, but the whole visible interface
idea crops up from time-to-time.  I guess I'm just nibbling around the edges
a bit to try and understand the problem better.

Skip