Ummmm… I don’t get your conclusion at ALL.
Justin James

The conclusions are distributed throughout the article, if you just skip to the end then no, this won’t make any sense. JavaScripts object-model is a lot less flexible than Python’s. There’s significantly more caching within the execution.

“Not having to declare the type isn’t what makes Python slow, the design of the Python language enables you to make almost anything dynamic. You can replace the methods on objects at runtime, you can monkey-patch low-level system calls to a value declared at runtime. Almost anything is possible.

It’s this design that makes it incredibly hard to optimise Python.”