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==========
PyPy 2.6.1
==========
We're pleased to announce PyPy 2.6.1, an update to PyPy 2.6.0 released June 1.
We have updated stdlib to 2.7.10, `cffi`_ to version 1.3, extended support for
the new vmprof_ statistical profiler for multiple threads, and increased
functionality of numpy.
You can download the PyPy 2.6.1 release here:
https://pypy.org/download.html
We would like to thank our donors for the continued support of the PyPy
project, and our volunteers and contributors.
.. _`cffi`: https://cffi.readthedocs.org
We would also like to 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 `modules`_ to run on pypy, or general `help`_ with making
RPython's JIT even better.
.. _`PyPy`: https://doc.pypy.org
.. _`RPython`: https://rpython.readthedocs.org
.. _`modules`: https://doc.pypy.org/en/latest/project-ideas.html#make-more-python-modules-pypy-friendly
.. _`help`: https://doc.pypy.org/en/latest/project-ideas.html
What is PyPy?
=============
PyPy is a very compliant Python interpreter, almost a drop-in replacement for
CPython 2.7. It's fast (`pypy and cpython 2.7.x`_ performance comparison)
due to its integrated tracing JIT compiler.
This release supports **x86** machines on most common operating systems
(Linux 32/64, Mac OS X 64, Windows 32, OpenBSD_, freebsd_),
as well as newer **ARM** hardware (ARMv6 or ARMv7, with VFPv3) running Linux.
We also welcome developers of other
`dynamic languages`_ to see what RPython can do for them.
.. _`pypy and cpython 2.7.x`: https://speed.pypy.org
.. _OpenBSD: https://cvsweb.openbsd.org/cgi-bin/cvsweb/ports/lang/pypy
.. _freebsd: https://svnweb.freebsd.org/ports/head/lang/pypy/
.. _`dynamic languages`: https://pypyjs.org
Highlights
===========
* Bug Fixes
* Revive non-SSE2 support
* Fixes for detaching _io.Buffer*
* On Windows, close (and flush) all open sockets on exiting
* Drop support for ancient macOS v10.4 and before
* Clear up contention in the garbage collector between trace-me-later and pinning
* Issues reported with our previous release were resolved_ after reports from users on
our issue tracker at https://bitbucket.org/pypy/pypy/issues or on IRC at
#pypy.
* New features:
* cffi was updated to version 1.3
* The python stdlib was updated to 2.7.10 from 2.7.9
* vmprof now supports multiple threads and OS X
* The translation process builds cffi import libraries for some stdlib
packages, which should prevent confusion when package.py is not used
* better support for gdb debugging
* freebsd should be able to translate PyPy "out of the box" with no patches
* Numpy:
* Better support for record dtypes, including the ``align`` keyword
* Implement casting and create output arrays accordingly (still missing some corner cases)
* Support creation of unicode ndarrays
* Better support ndarray.flags
* Support ``axis`` argument in more functions
* Refactor array indexing to support ellipses
* Allow the docstrings of built-in numpy objects to be set at run-time
* Support the ``buffered`` nditer creation keyword
* Performance improvements:
* Delay recursive calls to make them non-recursive
* Skip loop unrolling if it compiles too much code
* Tweak the heapcache
* Add a list strategy for lists that store both floats and 32-bit integers.
The latter are encoded as nonstandard NaNs. Benchmarks show that the speed
of such lists is now very close to the speed of purely-int or purely-float
lists.
* Simplify implementation of ffi.gc() to avoid most weakrefs
* Massively improve the performance of map() with more than
one sequence argument
.. _`vmprof`: https://vmprof.readthedocs.org
.. _resolved: https://doc.pypy.org/en/latest/whatsnew-2.6.1.html
Please try it out and let us know what you think. We welcome
success stories, `experiments`_, or `benchmarks`_, we know you are using PyPy, please tell us about it!
Cheers
The PyPy Team
.. _`experiments`: https://morepypy.blogspot.com/2015/02/experiments-in-pyrlang-with-rpython.html
.. _`benchmarks`: https://mithrandi.net/blog/2015/03/axiom-benchmark-results-on-pypy-2-5-0
|
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