Something I think is not explicit enough: you can import whatever from 'whatever' independently of whenever that package is updated or not. What you cannot do i

Something I think is not explicit enough: you can import whatever from 'whatever' independently of whenever that package is updated or not. What you cannot do is require() an exported package. This is great and in no way the same as Python 3; with this old packages are compatible with newer ones, it is newer ones the ones that will not be compatible with older ones (not ideal, but still acceptable IMO).