[Python-ideas] Proposal for extending the collections module - bags / multisets, ordered sets / unique lists

[Paul Moore]

2009/7/18 Chris Rebert <pyideas at rebertia.com>:
> A PEP is probably not be necessary just to add a class to the std lib.
> Counter was added without a PEP after all. You would need to convince
> the committers though.

For something like this, you could release your code as a separate
module. Then let it get some popular support before asking for it to
be promoted to the standard library. (Of course the proposed set
changes might not be possible this way, but they are the most likely
aspect to get rejected, because of backward compatibility concerns, in
any case).

Paul.