Top 19 Python Cython Projects
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NLP libraries such as Stanford NER Detector and Spacy
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Project mention: PyTorch: Where we are headed and why it looks a lot like Julia (but not exactly) | news.ycombinator.com | 2021-11-26
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We of cause, like all good developers do, put the error message online and look for clues, we quickly found a GitHub issue and boi, we are not the only souls that got crushed by a "timely" release of virtualenv just a few hours before us. Since the lastest version of virtualenv got installed every time we create the CI build job on Travis, it fails even we have done nothing. Of cause we didn't point fingers at other maintainers, they are just as hardworking as us and it's human to make mistakes. We are faced with 2 options, roll back to the previous release or wait for the patch of virtualenv to get released. As the devs of virtualenv did a lighting fast patch, we have chosen option 2.
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Project mention: My emulator runs Pokemon Red without any issues! | reddit.com/r/EmuDev | 2021-10-07
You can read my report on how PyBoy came along. It's not for technical reference like the Pan Docs, but just light descriptions of the Game Boy hardware with the intention to emulate it https://github.com/Baekalfen/PyBoy/raw/master/PyBoy.pdf
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Project mention: [Question] I am trying to segment the image using python. | reddit.com/r/opencv | 2021-08-09
If you’re using tesserocr then you can use OpenCV images directly, so you can just extract the relevant image rows (e.g. query_image = main_image[prev_line:this_line]) and process then without needing to save each image.
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VidCutter: https://github.com/ozmartian/vidcutter
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There are also online & offline onset detection approaches available as part of the Python madmom library https://github.com/CPJKU/madmom as binaries and Python classes. The methods included in madmom have shown state of the art results in multiple Music Information Retrieval Evaluation eXchange (MIREX) campaigns in recent years. Hope that's useful to you.
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Scout APM
Scout APM: A developer's best friend. Try free for 14-days. Scout APM uses tracing logic that ties bottlenecks to source code so you know the exact line of code causing performance issues and can get back to building a great product faster.
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Project mention: Comparing a Rust extension to other methods of speeding up python | reddit.com/r/Python | 2021-11-10
nimpy + nimporter is getting fairly mature. I've had my eye on the libraries for awhile now and I'm starting to seriously consider adding Nim to the build pipeline at werk.
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Project mention: [D] Unsupervised document similarity state of the art | reddit.com/r/MachineLearning | 2021-04-09
Links: fse: https://github.com/oborchers/Fast_Sentence_Embeddings Sentence-transformers: https://github.com/oborchers/sentence-transformers
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Project mention: I hear about Python being slow, but when has performance actually been an issue for you? | reddit.com/r/Python | 2021-04-21
Taking a quick look, PySPH looks pretty good... actually, this looks way, way better than what was around last time I looked! I haven't seen any validation tests in their examples yet, but overall the results look promising. Looks like you may still have to write quite a bit of code to get the simulation set up, but at least you won't have to write your own solver.
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LSH
Locality Sensitive Hashing using MinHash in Python/Cython to detect near duplicate text documents
Project mention: D Efficient Way To Cluster Millions Of Face | reddit.com/r/MachineLearning | 2020-12-30I'm looking into this, after reading the wikipedia entry of this it sound promissing! I already found a python lib https://github.com/mattilyra/LSH for this, I will get back to you once I tested this!
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For example here's a Python project modified to work well on Cython - I think that's pretty substantially modified.
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Project mention: asyncmy, an asyncio MySQL driver accelerated by cython | reddit.com/r/Python | 2021-03-15
Repo: https://github.com/long2ice/asyncmy
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cpython
Alternative StdLib for Nim for Python targets, hijacks Python StdLib for Nim (by juancarlospaco)
Project mention: Nim to write Python modules ? What about memory management ? | reddit.com/r/nim | 2021-10-14What if I have a python object that contains Nim-managed pointers to nim objects that contain Python objects created by Nim's CPython ? How will GC(s) work ?
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drf-turbo
An alternative serializer implementation for REST framework written in cython built for speed.
Project mention: GitHub - Mng-dev-ai/drf-turbo: An alternative serializer implementation for REST framework written in cython built for speed. | reddit.com/r/django | 2021-11-10 -
Project mention: Julia is the better language for extending Python | news.ycombinator.com | 2021-04-19
Rust doesn’t need to copy the data. It’s trivial to pass e.g. Numpy arrays to Rust as slices via Cython (let alone originating in Cython!), modify them, and return them, or use them as input for a new returned struct.
https://github.com/urschrei/simplification
https://github.com/urschrei/lonlat_bng
https://github.com/urschrei/pypolyline
Each of those repos has links to the corresponding Rust “shim” libraries that provide FFIs for dealing with the incoming data, constructing Rust data structures from it, and then transforming it back on the way out.
As a more general comment, using a GC language as the FFI target from a GC language is begging for difficult-if-not-impossible-to-debug crashes down the line.
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With Cython you can get C level performance. The cost is that your Python code has to be written just as you would write C.
See e.g. https://github.com/thomasahle/fast_pq/blob/main/_fast_pq.pyx... for how much fast Cython code can look like C.
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python-performance
Repository for the book High Performance Python for Data Analytics - published by Manning
All the code referred here can be found in https://github.com/tiagoantao/python-performance/tree/master/05-cython/sec6-quadlife
Python Cython related posts
- Pyjion – A Python JIT Compiler
- why can't you compile an interpreted language?
- How is python able to use c code?
- Is there a language that converts to C++ that allows you to make your life easier with the syntax?
- Static typing like C
- Anon discovers the secret to good code
- Let's create the real pure cython..
Index
What are some of the best open-source Cython projects in Python? This list will help you:
| Project | Stars | |
|---|---|---|
| 1 | spaCy | 21,827 |
| 2 | Cython | 6,556 |
| 3 | virtualenv | 4,011 |
| 4 | PyBoy | 3,312 |
| 5 | tesserocr | 1,550 |
| 6 | vidcutter | 930 |
| 7 | madmom | 828 |
| 8 | nimporter | 552 |
| 9 | Fast_Sentence_Embeddings | 452 |
| 10 | pysph | 262 |
| 11 | LSH | 199 |
| 12 | Streaming multipart/form-data parser | 98 |
| 13 | nes | 87 |
| 14 | asyncmy | 71 |
| 15 | cpython | 56 |
| 16 | drf-turbo | 55 |
| 17 | pypolyline | 18 |
| 18 | fast_pq | 3 |
| 19 | python-performance | 2 |
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