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Python repos to contribute to

OpenSrc lists 163 Python repositories with open issues for new contributors, and 72 of them are first-PR friendly. Between them they have 2,490 open good first issues and 2,453 help-wanted issues. The median welcome score is 72/100, and the best-scored right now are apache/airflow, topoteretes/cognee and pytorch/pytorch. Most are about Machine Learning & AI, Data Science and DevOps & Cloud.

163 repos by best score

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apache/airflow
Apache Airflow - A platform to programmatically author, schedule, and monitor workflows
135good first issues
- Python
- Field: Data Science
- Field: Machine Learning
- Stars:47K
- committed just now
- Apache-2.0
- CONTRIBUTING
- replies in ~48m
Score98 out of 100 contributor score, very welcomingFirst-PR friendly
topoteretes/cognee
Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory with…
59good first issues+2 help wanted
- Python
- Field: Machine Learning
- Field: Databases
- Stars:31.2K
- committed 2d ago
- Apache-2.0
- CONTRIBUTING
- replies in ~23h
Score98 out of 100 contributor score, very welcomingFirst-PR friendly
pytorch/pytorch
Tensors and Dynamic neural networks in Python with strong GPU acceleration
48good first issues
- Python
- Field: Machine Learning
- Field: Graphics
- Stars:103.5K
- committed just now
- CONTRIBUTING
- replies in ~25h
Score95 out of 100 contributor score, very welcomingFirst-PR friendly
spinalcordtoolbox/spinalcordtoolbox
Comprehensive and open-source library of analysis tools for MRI of the spinal cord.
33good first issues
- Python
- Stars:272
- committed 19h ago
- LGPL-3.0
- CONTRIBUTING
- replies in ~1h
Score92 out of 100 contributor score, very welcomingFirst-PR friendly
Significant-Gravitas/AutoGPT
AutoGPT is the vision of accessible AI for everyone, to use and to build on. Our mission is to provide the…
9good first issues+3 help wanted
- Python
- Field: Machine Learning
- Field: Backend
- Stars:187.6K
- committed 2d ago
- CONTRIBUTING
- replies in ~3h
Score90 out of 100 contributor score, very welcomingFirst-PR friendly
unslothai/unsloth
Local UI to run and train LLMs and diffusion models. Supports GGUF, MLX, Qwen3.8, DeepSeek-V4, MiniMax-H3…
4good first issues+19 help wanted
- Python
- Field: Machine Learning
- Field: Web Frontend
- Stars:77K
- committed 4h ago
- Apache-2.0
- CONTRIBUTING
- replies in ~15h
Score90 out of 100 contributor score, very welcomingFirst-PR friendly
ray-project/ray
Ray is an AI compute engine. Ray consists of a core distributed runtime and a set of AI Libraries for…
72good first issues+15 help wanted
- Python
- Field: Machine Learning
- Field: Data Science
- Stars:43.9K
- committed 4h ago
- Apache-2.0
- CONTRIBUTING
- replies in ~5h
Score90 out of 100 contributor score, very welcomingFirst-PR friendly
python/mypy
Optional static typing for Python
9good first issues
- Python
- Field: Compilers
- Stars:20.7K
- committed 1h ago
- CONTRIBUTING
- replies in ~16h
Score90 out of 100 contributor score, very welcomingFirst-PR friendly
dentalpin/dentalpin
The open source agentic dental software. Built for AI.
21good first issues+28 help wanted
- Python
- Field: Machine Learning
- Field: Databases
- Stars:83
- committed just now
- CONTRIBUTING
- replies in ~31h
Score89 out of 100 contributor score, very welcomingFirst-PR friendly
marimo-team/marimo
A reactive notebook for Python — run reproducible experiments, query with SQL, execute as a script, deploy as…
4good first issues+15 help wanted
- Python
- Field: Data Science
- Field: Machine Learning
- Stars:22.9K
- committed 10h ago
- Apache-2.0
- CONTRIBUTING
- replies in ~8h
Score88 out of 100 contributor score, very welcomingFirst-PR friendly
nltk/nltk
NLTK Source
12good first issues
- Python
- Field: Machine Learning
- Stars:14.7K
- committed 7h ago
- Apache-2.0
- CONTRIBUTING
- replies in ~11h
Score87 out of 100 contributor score, very welcomingFirst-PR friendly
embeddings-benchmark/mteb
MTEB: State-of-the-art evaluation of embeddings across languages and modalities
17good first issues+3 help wanted
- Python
- Field: Machine Learning
- Stars:3.4K
- committed 3d ago
- Apache-2.0
- CONTRIBUTING
- replies in ~42m
Score86 out of 100 contributor score, very welcomingFirst-PR friendly
python-poetry/poetry
Python packaging and dependency management made easy
4good first issues
- Python
- Stars:34.3K
- committed 2d ago
- MIT
- CONTRIBUTING
- replies in ~16h
Score85 out of 100 contributor score, very welcomingFirst-PR friendly
Scottcjn/rustchain-bounties
Earn RTC crypto by contributing to the RustChain ecosystem. Bounties from 1-150 RTC. Star, code, write…
60good first issues+15 help wanted
- Python
- Field: Blockchain
- Field: Machine Learning
- Stars:283
- committed 5h ago
- AGPL-3.0
- CONTRIBUTING
Score85 out of 100 contributor score, very welcomingFirst-PR friendly
getsentry/sentry
Developer-first error tracking and performance monitoring
10good first issues+1 help wanted
- Python
- Field: Observability
- Field: DevOps
- Stars:44.9K
- committed just now
- CONTRIBUTING
- replies in ~3d
Score84 out of 100 contributor score, very welcomingFirst-PR friendly
sgl-project/sglang
SGLang is a high-performance serving framework for large language models and multimodal models.
49good first issues+15 help wanted
- Python
- Field: Machine Learning
- Stars:36.6K
- committed just now
- Apache-2.0
- CONTRIBUTING
Score84 out of 100 contributor score, very welcomingFirst-PR friendly
scipy/scipy
SciPy library main repository
4good first issues
- Python
- Field: Scientific Computing
- Stars:15.1K
- committed just now
- BSD-3-Clause
- CONTRIBUTING
- replies in ~4h
Score84 out of 100 contributor score, very welcomingFirst-PR friendly
deepinv/deepinv
DeepInverse: a PyTorch library for solving imaging inverse problems using deep learning
21good first issues
- Python
- Field: Machine Learning
- Stars:821
- committed 1d ago
- BSD-3-Clause
- CONTRIBUTING
- replies in ~2d
Score84 out of 100 contributor score, very welcomingFirst-PR friendly
cartography-cncf/cartography
Cartography is a Python tool that pulls infrastructure assets and their relationships into a Neo4j graph…
6good first issues+5 help wanted
- Python
- Field: Databases
- Field: DevOps
- Stars:4.1K
- committed 1d ago
- Apache-2.0
- CONTRIBUTING
- replies in ~2d
Score83 out of 100 contributor score, very welcomingFirst-PR friendly
beeware/briefcase
Tools to support converting a Python project into a standalone native application.
5good first issues
- Python
- Stars:3.4K
- committed 1d ago
- BSD-3-Clause
- CONTRIBUTING
- replies in ~13h
Score83 out of 100 contributor score, very welcomingFirst-PR friendly
usemoss/moss
The retrieval layer for production AI systems. Lightning-fast (<10ms) search without vector databases. Built…
26good first issues+28 help wanted
- Python
- Field: Machine Learning
- Field: DevOps
- Stars:787
- committed 3d ago
- BSD-2-Clause
- CONTRIBUTING
- replies in ~6d
Score83 out of 100 contributor score, very welcoming
scikit-learn/scikit-learn
scikit-learn: machine learning in Python
1good first issue+178 help wanted
- Python
- Field: Data Science
- Field: Machine Learning
- Stars:67.4K
- committed 5d ago
- BSD-3-Clause
- CONTRIBUTING
- replies in ~2d
Score82 out of 100 contributor score, very welcoming
PostHog/posthog
:hedgehog: PostHog is the leading platform for building self-driving products. Our developer tools – AI…
8good first issues
- Python
- Field: Data Science
- Field: Machine Learning
- Stars:40K
- committed just now
- CONTRIBUTING
Score82 out of 100 contributor score, very welcomingFirst-PR friendly
beetbox/beets
music library manager and MusicBrainz tagger
10good first issues
- Python
- Field: CLI Tools
- Stars:15.7K
- committed 2h ago
- MIT
- CONTRIBUTING
- replies in ~3d
Score82 out of 100 contributor score, very welcomingFirst-PR friendly
HKUDS/nanobot
Ultra-lightweight, open-source, self-hosted personal AI agent framework in Python with WebUI, tools, memory…
3good first issues
- Python
- Field: Machine Learning
- Field: Networking
- Stars:48.7K
- committed 1h ago
- MIT
- CONTRIBUTING
- replies in ~23h
Score81 out of 100 contributor score, very welcomingFirst-PR friendly
MODSetter/SurfSense
Air gapped, privacy focused open source NotebookLM alternative. Join our Discord…
20good first issues+74 help wanted
- Python
- Field: Machine Learning
- Field: Web Frontend
- Stars:16.3K
- committed 8h ago
- CONTRIBUTING
- replies in ~30d
Score81 out of 100 contributor score, very welcoming
ansible/awx
AWX provides a web-based user interface, REST API, and task engine built on top of Ansible. It is one of the…
37good first issues+112 help wanted
- Python
- Field: DevOps
- Field: Web Frontend
- Stars:15.6K
- committed 19h ago
- CONTRIBUTING
- replies in ~30d
Score81 out of 100 contributor score, very welcoming
element-hq/synapse
Synapse: Matrix homeserver written in Python/Twisted + Rust
25good first issues
- Python
- Stars:4.7K
- committed 13h ago
- AGPL-3.0
- CONTRIBUTING
- replies in ~8d
Score81 out of 100 contributor score, very welcoming
eclipse-sumo/sumo
Eclipse SUMO is an open source, highly portable, microscopic and continuous traffic simulation package…
42good first issues
- Python
- Field: Scientific Computing
- Field: Networking
- Stars:4.2K
- committed just now
- EPL-2.0
- CONTRIBUTING
- replies in ~11d
Score81 out of 100 contributor score, very welcoming
pipeshub-ai/pipeshub-ai
PipesHub is an open-source platform for securely connecting enterprise knowledge to AI. Give AI agents…
6good first issues+2 help wanted
- Python
- Field: Machine Learning
- Field: DevOps
- Stars:3.8K
- committed 7h ago
- Apache-2.0
- CONTRIBUTING
- replies in ~6h
Score81 out of 100 contributor score, very welcomingFirst-PR friendly

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