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facebookincubator
MetaPython
Python2021–2025
facebookincubator / MetaPython

MetaPython

This is Meta's fork of the CPython runtime. The name "cinder" here is historical, see https://github.com/facebookincubator/cinderx for the Python extension / JIT compiler.

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31Distinct people
39Mentions
0Explicit recommenders
3.8KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

This is Meta's fork of the CPython runtime. The name "cinder" here is historical, see https://github.com/facebookincubator/cinderx for the Python extension / JIT compiler.

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 9:02:44 AM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year39 dated mentions

Observed mentions: 2021-05-04 21:38:14 UTC to 2025-09-29 14:31:26 UTC.

0510152021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 17 mentions; 1 submissions, 16 comments20212022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 7 mentions; 1 submissions, 6 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 9 mentions; 0 submissions, 9 comments20232024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments2025

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC17116
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC716
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC909
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC303
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC303

What Hacker News says

3 sources
ngrilly·Sep 29, 2025
Full agree. Value types are underrated. That's one of the best things about C# and Go. They are increasing performance (with contiguous memory) and reducing GC pressure. I also believe that dynamically typed languages like Python would gain a lot by introducing a form of value types/unboxed values. For example, Cinder, Meta's internal version of CPython, supports what they call "static classes": https://github.com/facebookincubator/cinder?tab=readme-ov-fi....
In Why we develop EloqDB mainly in C++

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