[yxhuvud]

While what you say is true, there is still a huge gap between the performance of javascript (and even Ruby) and that of Python. The efforts to optimize Python are lagging behind, so there is a lot of things that still can be made faster.

[Sesse__]

Python is also choosing to play with one hand behind its back; e.g., the “no extension API changes” rule which means any hope of a faster value representation (one of the most important factors in making a dynamic language fast!) goes out the window, refusing to change the iterator API (which means that throwing and handling exceptions is something that needs to be handled by the fast path of basically everything), and so on.

[pbronez]

Those changes are big enough that they’d need to be a Python 4, don’t you think? Community is still gun why after the 2-3 transition pain.

[Sesse__]

The biggest problem of the Python 3 release was that it broke a bunch of _Python_ code. That's pretty different from changing the C API. But sure, it has ups and it has downs. One of the downs is that Python, despite a lot of announcements over the years, still is struggling to become significantly faster.

[adgjlsfhk1]

yeah. Python is somewhat trapped here. because Python is slow, real work gets moved to C, and the C api makes it almost impossible to speed Python up. If Python had made the API changes needed for speed 20 years ago, there would be way less C code, so further changes would be easier, but that ship has now basically sailed

[gpderetta]

It could have made the changes in the 2->3 transition.

Instead we got parentheses around print.

[umanwizard]

Google has been pouring huge amounts of effort into making their JS interpreter fast for many years at this point. They have a lot more resources than the Python foundation.

[no_wizard]

At one point, Google was also interested in pouring lots of money into making Python faster, and they shifted those resources away.

I think what always ends up failing here is that, as others have stated, they won't make breaking API changes, in particular those in charge of driving Python forward are extremely hesitant to break the C API for fear of losing packages that have make Python so popular.

I would imagine, if the leadership was willing to put in the elbow grease to help those key packages along the changes when they happen, they could do it, but I understand that its not always that simple

[dehrmann]

Meta does some work for this with Cinder, but Meta has a history of language forks, and it's far enough off the beaten track that I wouldn't use it.

[zem]

cinder team member here - we are putting a lot of work into having cinder converge with rather than diverge from mainline cpython. the main idea is to get support for pluggable JITs into cpython, and then have cinder use those APIs to work as a regular extension module.

[azhenley]

Microsoft had the Faster CPython team for several years, and then recently laid off some of the core devs and the team lead.