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PyPy 7.3.0 released

The PyPy team is proud to release the version 7.3.0 of PyPy, which includes two different interpreters:
  • PyPy2.7, which is an interpreter supporting the syntax and the features of Python 2.7 including the stdlib for CPython 2.7.13
  • PyPy3.6: which is an interpreter supporting the syntax and the features of Python 3.6, including the stdlib for CPython 3.6.9.
The interpreters are based on much the same codebase, thus the double release.

We have worked with the python packaging group to support tooling around building third party packages for python, so this release changes the ABI tag for PyPy.

Based on the great work done in portable-pypy, the linux downloads we provide are now built on top of the manylinux2010 CentOS6 docker image. The tarballs include the needed shared objects to run on any platform that supports manylinux2010 wheels, which should include all supported versions of debian- and RedHat-based distributions (including Ubuntu, CentOS, and Fedora).

The CFFI backend has been updated to version 1.13.1. We recommend using CFFI rather than c-extensions to interact with C.
The built-in cppyy module was upgraded to 1.10.6, which provides, among others, better template resolution, stricter enum handling, anonymous struct/unions, cmake fragments for distribution, optimizations for PODs, and faster wrapper calls. We reccomend using cppyy for performant wrapping of C++ code for Python.

The vendored pyrepl package for interaction inside the REPL was updated.

Support for codepage encoding and decoding was added for Windows.

As always, this release fixed several issues and bugs raised by the growing community of PyPy users. We strongly recommend updating. Many of the fixes are the direct result of end-user bug reports, so please continue reporting issues as they crop up.
You can download the v7.3 releases here:
We would like to thank our donors for the continued support of the PyPy project. If PyPy is not quite good enough for your needs, we are available for direct consulting work.

We would also like to thank our contributors and encourage new people to join the project. PyPy has many layers and we need help with all of them: PyPy and RPython documentation improvements, tweaking popular packages to run on pypy, or general help with making RPython’s JIT even better. Since the previous release, we have accepted contributions from 3 new contributors, thanks for pitching in.

If you are a python library maintainer and use c-extensions, please consider making a cffi / cppyy version of your library that would be performant on PyPy. If you are stuck with using the C-API, you can use docker images with PyPy built in or the multibuild system to build wheels.

What is PyPy?

PyPy is a very compliant Python interpreter, almost a drop-in replacement for CPython 2.7, 3.6. It’s fast (PyPy and CPython 2.7.x performance comparison) due to its integrated tracing JIT compiler.

We also welcome developers of other dynamic languages to see what RPython can do for them.

This PyPy release supports:
  • x86 machines on most common operating systems (Linux 32/64 bit, Mac OS X 64-bit, Windows 32-bit, OpenBSD, FreeBSD)
  • big- and little-endian variants of PPC64 running Linux
  • s390x running Linux
  • 64-bit ARM machines running Linux
Unfortunately at the moment of writing our ARM buildbots are out of service, so for now we are not releasing any binary for the ARM architecture (32-bit), although PyPy does support ARM 32-bit processors.

What else is new?

PyPy 7.2 was released in October, 2019. There are many incremental improvements to RPython and PyPy, For more information about the 7.3.0 release, see the full changelog.

Please update, and continue to help us make PyPy better.

The PyPy team