exaloop/codon

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A high-performance, zero-overhead, extensible Python compiler with built-in NumPy support

Stars: 16.8k
Forks: 603
Open beginner issues: 0
Indexed issues: 97
Avg merge: 4d 23h
Merged PRs (30d): 6

Dominant language: Python
License: Apache-2.0
Last GitHub push: Sep 13, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted

Open All

97 open issues indexed

WebAssembly Support? Open

enhancement help wanted

exaloop/codon#67 · 20 comments · 18 reactions · 0 assignees · Indexed Sep 15, 2026
windows support Open

enhancement help wanted

exaloop/codon#69 · 31 comments · 39 reactions · 0 assignees · Indexed Sep 15, 2026
Async support? Open

enhancement

exaloop/codon#71 · 4 comments · 6 reactions · 0 assignees · Indexed Sep 15, 2026
Homebrew installation Open

enhancement

exaloop/codon#77 · 0 comments · 8 reactions · 0 assignees · Indexed Sep 15, 2026
static compilation option? Open

enhancement help wanted

exaloop/codon#82 · 8 comments · 9 reactions · 0 assignees · Indexed Sep 15, 2026
Automatically generate C/C++ header file when building shared library Open

enhancement

exaloop/codon#90 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
package python modules together Open

enhancement

exaloop/codon#112 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Add LTO + PGO + BOLT optimizations Open

enhancement

exaloop/codon#137 · 1 comment · 2 reactions · 1 assignee · Indexed Sep 15, 2026
Jupyter documentation error Open

exaloop/codon#152 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Build with gpu parallelization fails Open

exaloop/codon#193 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Codon vs OpenAI Triton? Open

exaloop/codon#197 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Large code size caused by vtable initialization in `prepareVTables` function Open

exaloop/codon#202 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Big integer support Open

enhancement

exaloop/codon#235 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Segmentation fault in invoking list(zip(,)) Open

bug

exaloop/codon#246 · 6 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
add benchmark vs mypyc ? Open

exaloop/codon#251 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Unable to pass a function as an argument Open

exaloop/codon#261 · 2 comments · 1 reaction · 1 assignee · Indexed Sep 15, 2026
Conda package? Open

exaloop/codon#296 · 3 comments · 4 reactions · 0 assignees · Indexed Sep 15, 2026
Pipe _much_ slower than @par (and even regular Python!) when calculating Pi with Monte Carlo Open

exaloop/codon#305 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Question: Platform - cross compiling plans? Open

enhancement

exaloop/codon#309 · 4 comments · 8 reactions · 0 assignees · Indexed Sep 15, 2026
Throws error on str.join(str, Generator[pyobj]) Open

enhancement stdlib

exaloop/codon#318 · 3 comments · 0 reactions · 2 assignees · Indexed Sep 15, 2026
Incorrect type hints cause segfault. Open

bug

exaloop/codon#355 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Upstreaming OpenMP changes discussion Open

enhancement

exaloop/codon#368 · 5 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Out of the tree build fails several tests executing "codon_test" Open

installation

exaloop/codon#393 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Operation between data of different bit lengths Open

stdlib

exaloop/codon#408 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Segmentation fault is caused with pyext mode when a method takes an object of another class as input Open

exaloop/codon#439 · 2 comments · 0 reactions · 2 assignees · Indexed Sep 15, 2026
Cyclic Type Annotations do not work Open

enhancement

exaloop/codon#482 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Unbuffered output Open

enhancement

exaloop/codon#529 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
using protobuf case Open

exaloop/codon#547 · 8 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Codon slower than PyPy, can't find out why Open

bug

exaloop/codon#553 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
String concatenation in a loop slow compared to Python Open

exaloop/codon#559 · 4 comments · 0 reactions · 2 assignees · Indexed Sep 15, 2026
Bug:List to tuple conversion Open

bug

exaloop/codon#573 · 4 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Better handling of classes Open

exaloop/codon#606 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Python Standard Library: Tracking Progress Open

enhancement stdlib

exaloop/codon#608 · 2 comments · 3 reactions · 2 assignees · Indexed Sep 15, 2026
Imitating the Rust compiler, it gives detailed information about incompatible warnings before compiling, and provides automatic repairs. Open

enhancement

exaloop/codon#612 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Tuple Type Extensions Open

bug

exaloop/codon#616 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Weirdness with unpacking. Open

bug

exaloop/codon#617 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
error: 'Generator[FastqRecord]' object has no attribute '__to_py__' Open

enhancement stdlib

exaloop/codon#626 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Calling function in python extension module with wrong type crashes python. Open

bug

exaloop/codon#630 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Codon compiler prioritizes float if both int and float overloads exist for integer value Open

exaloop/codon#631 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
【Codon】File imports using Nunpy do not load properly. Open

bug stdlib

exaloop/codon#632 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
【Codon】 When a process that consumes a large amount of memory is executed, it is killed and the process is stopped. Open

bug

exaloop/codon#633 · 3 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
【Codon】 Various functions of Nunpy are not available. Open

exaloop/codon#634 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Unable to get Fast API working Open

bug

exaloop/codon#642 · 3 comments · 2 reactions · 1 assignee · Indexed Sep 15, 2026
Metaprogramming and AST manipulation from Codon Open

enhancement

exaloop/codon#643 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
attribute 'resize' missing Open

stdlib

exaloop/codon#654 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Weird internal error when using regex module Open

exaloop/codon#669 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Memory Leak Detection by LSAN in Single-threaded Context with OpenMP Involvement Open

exaloop/codon#671 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Publish on pypi Open

installation

exaloop/codon#673 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Dictionary unpacking causes compilation assertion error Open

bug

exaloop/codon#680 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Class fields type inference fails in inheritance scenarios in Codon 0.19 Open

bug

exaloop/codon#687 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026

exaloop/codon

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