Productivity●●Solid
Lightwave – Real-time notes app, 3.5 years of hand-rolled JavaScript
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jv22222
52374mo ago
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GitHub Repository
Real Goroutines for Python 3.13t+ free-threaded.
60 starsPython
Runloom – Go-style coroutines for Python free-threaded
by Uptrenda·Jul 10, 2026·47 points·29 comments
AI Analysis
●●●BangerWizardryBig Brain
Hand-rolled asm context switches matching Go's 2.1M spawn/s on CPython is genuinely wild.
Strengths
- •Custom assembly context switching achieves ~80ns swap without syscalls on x86_64 and aarch64.
- •M:N work-stealing scheduler with Chase-Lev deque per hub for efficient core utilization.
- •Prebuilt wheels across Linux, macOS, Windows with zero runtime dependencies.
Weaknesses
- •Per-fiber memory is 8.8KB vs Go's 2.7KB - 3.3× overhead from CPython eval frames.
- •Requires free-threaded Python 3.13t+ which isn't yet mainstream production.
Category
Target Audience
Python developers needing high-concurrency without async/await
Similar To
gevent · asyncio · Go goroutines
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