Message 163627 - Python tracker

> Again, it can be a private function in the operator module that happens
> to be wrapped or exposed in the hmac module. Practicality beats purity.

Yes, we just need a place for the function. The operator module is a
good place if we don't want to introduce a new module.

Nick:
I'll target pbkdf2 and other password hashing / security related for 3.4.