Chris Angelico <ros...@gmail.com> writes: > PEP 484 says that type hints don't need a decorator, but if it were > anything else, then yes, it'd need a second decorator. But what if one > of the annotation usages wants to be a dictionary? How can you elide > the outer dictionary and still recognize what's going on?
If there's only one annotation it can take a dictionary without an outer one. If there's more than one annotation then they would have to be labelled: I don't see what difference it makes if one of the annotation values is a dictionary. > that everything is right there in the function signature... but look > how easy it is to introduce bugs: you're inconsistent about whether > the first parameter is called "name" or "user". Heh, nice catch, it's late here. But, that would have been caught immediately by the type checker examining the type annotation. > This is exactly why annotations exist. Like decorators themselves, > they reduce repetition and thus bugs. Type annotations add a small amount of repetition but they do reduce bugs. That's the reason for having them. -- https://mail.python.org/mailman/listinfo/python-list
