In the first case, she's mentioning descriptors to make the same point as for "this" with javascript: you can bind a set of related data to a function. Exposin

In the first case, she's mentioning descriptors to make the same point as for "this" with javascript: you can bind a set of related data to a function. Exposing "descriptors" is a latter thing, but their default implementation was already a thing before they were visible to python users.