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CPython Alternatives
Similar projects and alternatives to CPython
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Judoscale
Save 47% on cloud hosting with autoscaling that just works. Judoscale integrates with Django, FastAPI, Celery, and RQ to make autoscaling easy and reliable. Save big, and say goodbye to request timeouts and backed-up task queues.
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CodeRabbit
CodeRabbit: AI Code Reviews for Developers. Revolutionize your code reviews with AI. CodeRabbit offers PR summaries, code walkthroughs, 1-click suggestions, and AST-based analysis. Boost productivity and code quality across all major languages with each PR.
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PostgreSQL
Mirror of the official PostgreSQL GIT repository. Note that this is just a *mirror* - we don't work with pull requests on github. To contribute, please see https://wiki.postgresql.org/wiki/Submitting_a_Patch
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Pandas
Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more
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MySQL
MySQL Server, the world's most popular open source database, and MySQL Cluster, a real-time, open source transactional database.
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countwords
Discontinued Playing with counting word frequencies (and performance) in various languages.
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InfluxDB
InfluxDB high-performance time series database. Collect, organize, and act on massive volumes of high-resolution data to power real-time intelligent systems.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a better CPython alternative or higher similarity.
CPython discussion
CPython reviews and mentions
Posts with mentions or reviews of CPython.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2025-04-29.
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Top Programming Languages for AI Development in 2025
Python: The Superpower of AI
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🚀 Your First Setup Win: Python and VS Code on Mac (Beginner Friendly)
I headed to the official Python website: python.org. Right on the homepage, there's a big, friendly yellow "Download Python" button — practically waving at you. I clicked it and downloaded the latest stable macOS installer.
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I built a hardware processor that runs Python
As in my sibling comment, pypy has already done all this work.
CPython's struct module is just a shim importing the C implementations: https://github.com/python/cpython/blob/main/Lib/struct.py
Pypy's is a Python(-ish) implementation, leveraging primitives from its own rlib and pypy.interpreter spaces: https://github.com/pypy/pypy/blob/main/pypy/module/struct/in...
The Python stdlib has enormous surface area, and of course it's also a moving target.
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How We Built an AI-Powered Automated Product Enrichment Pipeline for Shopify
Python and some Bash scripts — for the enrichment logic and updates
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Heads or Tails? Exploring Quantum Weirdness with a Virtual Coin Flip
If your version is 3.9 or above, you’re good to go. If not, download the latest version from python.org.
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Advanced Python Features
The quality of documentation is a known, highlighted concern in the community. There is particular interest in adopting Diataxis principles to improve documentation, both for Python itself and for packaging (see e.g. the user guide at https://packaging.python.org/en/latest/ , or the PyPA main site https://www.pypa.io/en/latest/ ).
If you want to help, there's a section on the Python forum (https://discuss.python.org/c/documentation/26) and a Discord server, and issues with documentation can also be reported on the main Python GitHub issue tracker (https://github.com/python/cpython/labels/docs).
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Python's new t-strings – Dave Peck
Prior to having a bool type, Python didn't even have True/False keywords.
The reason something silly like `4 + True` works is because the bool type implements `tp_as_number` [0]. The reason it works this way is intentional because it would been a Python 3 str-style debacle if ints and bools were not interchangeable.
[0] https://github.com/python/cpython/blob/main/Objects/boolobje...
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15,000 lines of verified cryptography now in Python
There's no mention of what Python version this is actually in.
After some digging, it looks like the answer is 3.14 [0], so we won't be seeing this until October [1].
One could argue that this is a security fix (just read the first sentence of the blog post) and should be included in all the currently supported Python versions (3.9+) [2].
[0] https://github.com/python/cpython/blob/main/Doc/whatsnew/3.1...
[1] https://peps.python.org/pep-0745/
[2] https://devguide.python.org/versions/
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Curling CPython around PVS-Studio
Then one day, the upcoming CPython 3.13.3 release, which we've taken on the e6dfa9d commit, came to our attention. I usually check projects in the Debug configuration. However, this time, I was curious and wanted to run the analysis in the Release configuration to see what happens in the interpreter shipped to the end user.
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Python 3.7.2 Installation Error: call to undeclared function 'sendfile'
❯ CFLAGS="-I$(brew --prefix openssl)/include -I$(brew --prefix bzip2)/include -I$(brew --prefix readline)/include -I$(xcrun --show-sdk-path)/usr/include" \ LDFLAGS="-L$(brew --prefix openssl)/lib -L$(brew --prefix readline)/lib -L$(brew --prefix zlib)/lib -L$(brew --prefix bzip2)/lib" \ pyenv install --patch 3.7.2 < <(curl -sSL 'https://github.com/python/cpython/commit/8ea6353.patch?full_index=1') python-build: use [email protected] from homebrew python-build: use readline from homebrew Installing Python-3.7.2... patching file 'Misc/NEWS.d/next/macOS/2020-06-24-13-51-57.bpo-41100.mcHdc5.rst' patching file configure patching file configure.ac python-build: use tcl-tk from homebrew python-build: use readline from homebrew python-build: use zlib from xcode sdk Installed Python-3.7.2 to /Users/ryanlee/.pyenv/versions/3.7.2
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A note from our sponsor - Judoscale
judoscale.com | 30 Apr 2025
Stats
Basic CPython repo stats
1491
66,627
10.0
2 days ago
python/cpython is an open source project licensed under GNU General Public License v3.0 or later which is an OSI approved license.
The primary programming language of CPython is Python.
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Review ★★★★★ 10/10
Review ★★★★☆ 7/10
Python taught me that programming doesn't need to be difficult. As a language designer I always aspire for most things to just be as simple as a Python app.
Review ★★★★★ 10/10
Review ★★★★★ 10/10