Description:
Highly performant implementation of Python 2 in Python
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Type: Formula
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Latest Version: 7.3.20@0
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Tracked Since: Oct 15, 2025
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Links:
Homepage |
@pypyproject |
formulae.brew.sh
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Category: Developer tools
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Tags:
python
interpreter
jit
pypy
python2
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Install:
brew install pypy
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About:
PyPy is a high-performance, JIT-compiling alternative implementation of the Python programming language. It executes standard Python 2.7 code but often with significant speed improvements over the standard CPython interpreter. Its main value proposition is accelerating long-running, CPU-bound applications without code modification.
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Key Features:
- Just-In-Time (JIT) compilation for significant speedups
- Drop-in compatibility with CPython 2.7
- Reduced memory consumption compared to CPython
- Stackless mode support for microthreads
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Use Cases:
- Accelerating CPU-bound Python 2.7 applications
- Running legacy Python 2 codebases efficiently
- Long-running processes where performance is critical
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Alternatives:
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CPython
– The standard reference implementation; generally faster startup but slower raw execution than PyPy for long-running tasks.
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pypy3
– The PyPy implementation for Python 3.x; use this if you require modern Python 3 syntax and libraries.
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