Nice writeup - I've been doing this type of thing for 10 years before type annotations by passing the types to the decorator and then using kwargs to supply def

Nice writeup - I've been doing this type of thing for 10 years before type annotations by passing the types to the decorator and then using kwargs to supply defaults. @annotate(foo=int, bar=str) def view_func(foo=0, bar='hi there'): ... The types could also be arbitrary callables to parse things like datetime and what not. I'd parse the params from either the get params or post data (json, urlencoded, etc). But now I'm using graphene and graphql to handle all this -- it's a better way to do all of it imho. Of course this all came along after instagram, so you didn't have that choice back then.