I use it like es6 or haskell destructuring. Sure it's a little weak compared to both those implementations, but the tuple case covers enough to be useful.

A good example of a use case I can think of would be to pass an (x,y) coordinate pair as a single parameter, and unpack it in the parameter definition. This would save having an extra line that says (x,y) = pt.

Unless I'm missing something, I don't see this as a show stopper personally, and see it as increasing readability.

> As someone who's bounced back and forth between Python 2 and Python 3, I'm curious about your need of parameter tuple unpacking[0]. I've never encountered it, and after some research I don't understand the use case.

> I don't mean to sound like I'm trying to belittle your position, I would like to understand more. The PEP below doesn't seem to do a very good job explaining why people like them, and I'd like to hear a proponents position on the feature.

Basically, I need it for functional programming. See here:

https://news.ycombinator.com/item?id=10213963