I want to announce the submission of a new typing PEP, for ParameterSpecifications (https://github.com/python/peps/pull/1259). We discussed this concept at the last typing summit (presentation can be found here https://github.com/facebook/pyre-check/blob/master/docs/Variadic_Type_Variables_for_Decorators_and_Tensors.pdf), and there seemed to be general consensus on the utility of this idea, and the appropriateness of the particular solution.
One note that I know there was some disagreement on was the name for the feature itself, with some folks preferring ArgSpec. I wrote up a brief note in the PEP itself why we're not as big fans of that name, but I'd love to hear all of your opinions on this issue, as well as on anything else in the PEP.
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