pypy ☆
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Description:
Highly performant implementation of Python 2 in Python
Type: Formula  |  Latest Version: 7.3.20@0  |  Tracked Since: Oct 15, 2025
Links: Homepage  |  @pypyproject  |  formulae.brew.sh
Category: Developer tools
Tags: python interpreter jit pypy python2
Install: brew install pypy
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.
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
Use Cases:
  • Accelerating CPU-bound Python 2.7 applications
  • Running legacy Python 2 codebases efficiently
  • Long-running processes where performance is critical
Alternatives:
  • CPython – The standard reference implementation; generally faster startup but slower raw execution than PyPy for long-running tasks.
  • pypy3 – The PyPy implementation for Python 3.x; use this if you require modern Python 3 syntax and libraries.
Version History
Detected Version Rev Change Commit
Oct 15, 2025 5:03pm 0 VERSION_BUMP 54c38746
Sep 11, 2025 7:23am 0 VERSION_BUMP 7c00687c
Nov 27, 2024 12:45am 1 VERSION_BUMP 0220ed45
Nov 10, 2024 1:46pm 1 VERSION_BUMP b828cc0e
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