PyPy (with JIT) benchmark times normalized to CPython. Smaller is better. Based on the geometric average of all benchmarks "... we are avid fans of PyPy and commensurately thankful for the great …

We provide pre-compiled binaries for many platforms and OSes. Note Our nightly binary builds have the most recent bugfixes and performance improvements, though they can be less stable than the offici

5 days ago · Welcome to PyPy’s documentation! Welcome to the documentation for PyPy, a fast, compliant alternative implementation of the Python language. If you want to find out more about what …

5 days ago · What is PyPy? PyPy is a reimplementation of Python in Python, using the RPython translation toolchain. PyPy tries to find new answers about ease of creation, flexibility, maintainability …

5 days ago · What is PyPy? Historically, PyPy has been used to mean two things. The first is the RPython translation toolchain for generating interpreters for dynamic programming languages. And …

PyPy's sandboxing is a working prototype for the idea of running untrusted user programs. Unlike other sandboxing approaches for Python, PyPy's does not try to limit language features considered …

5 days ago · Downloading and Installing PyPy Just like CPython, you need a base interpreter environment and then can install extra packages. The choices for installing the base interpreter are: …

Mar 23, 2026 · PyPy v7.3.21: release of python 2.7, 3.11 The PyPy team is proud to release version 7.3.21 of PyPy after the previous release on July 4, 2025. This is a bug-fix release that also updates …

Differences between PyPy and CPython This page documents the few differences and incompatibilities between the PyPy Python interpreter and CPython. Some of these differences are “by design”, since …

download PyPy from your release vendor (usually an outdated version): Ubuntu (PPA), Debian, Homebrew, MacPorts, Fedora, Gentoo and Arch are known to package PyPy, with various degrees …