Again, sometimes Python can automatically infer what types are returned from a function. But if you plan ... the way annotations are resolved at the module level: from __future__ import ...

But then I show them that functions and classes are both objects, and they realize that Python's notion of "everything ... have solved all sorts of problems, from modules mutually referencing each ...

For work bound by Python’s native object types, the speedups won’t ... either across an entire module or only on select functions. Cython also allows you to natively access Python structures ...