SYsynergy20·Oct 11, 2021
To answer my own question there are 2 active python to js efforts:
https://brython.info/static_tutorial/en/index.html
https://github.com/qquick/Transcrypt
In We've been lied to: JavaScript is fastTranscryptOrg
Transcrypt
Python2016–2021
TranscryptOrg / Transcrypt
Transcrypt
Python 3.9 to JavaScript compiler - Lean, fast, open!
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9Mentions
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2.9KGitHub stars
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Python 3.9 to JavaScript compiler - Lean, fast, open!
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This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 12:24:10 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
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HN mentions by year9 dated mentions
Observed mentions: 2016-10-14 04:28:23 UTC to 2021-10-11 04:21:15 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 2 | 1 | 1 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 1 | 1 | 0 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 3 | 0 | 3 |
What Hacker News says
9 sourcesI found the following article and associated presentation to be a great overview of the options for this kind of thing: https://anvil.works/blog/python-in-the-browser-talk
Transcrypt's (https://github.com/QQuick/Transcrypt) approach made the most sense for me. The project seems to be a heroic effort by one guy.
In Brython: an implementation of Python 3 running in the browserTranscrypt: Python 3.7 to JavaScript Compiler
5 points · Open discussionThought experiment: what about transpiling Python to JS? https://github.com/QQuick/Transcrypt looks like a nice implementation, but their readme just talks about deployment to browsers — I'm curious about outside of the browser whether Transcrypt + Node might be more efficient than CPython.
(Not even just CPython, but really any dynamic language implementation.)
And then of course wasm could still be used for C extensions.
In A lighter V8Show HN: Transcrypt Python to JavaScript compiler w. ES6 modules, alpha release
1 points · Open discussionStarting with Transcrypt v3.6.101 it is now possible to create native JavaScript component frameworks using the Transcrypt Python to JavaScript compiler. This makes it possible to write compact, fast JavaScript components for the browser in Python.
The project can be found at:
https://github.com/qquick/Transcrypt
Components can be freely mixed on a page without requiring recompilation. A developer doesn't need Transcrypt or any knowledge of it to use such a framework.
Each page has one unit that contains the Transcrypt runtime and, if needed, any central facilities. It is compiled with the -u .run switch. In addition each page can hold as many separate components as needed. Compile these with the -u .com switch.
A loader is generated, accepting a list of components. By varying this list, each page can have its own subset of components, wi
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thout the need to recompile. The generated JavaScript code for components can be very small, typically a few hundred bytes. The runtime and central facilities are included in the page only once.
By the way, the Node demo isn't online, but available on github (and in the pip-installation):
https://github.com/QQuick/Transcrypt/blob/master/transcrypt/...
In Transcrypt Python-JS compiler now supports async/await