We have released PyPy2.7 v5.6, about two months after PyPy2.7 v5.4. This new PyPy2.7 release includes the upstream stdlib version 2.7.12.
We continue to make incremental improvements to our C-API compatibility layer (cpyext). We pass all but a few of the tests in the upstream numpy test suite.
Work proceeds at a good pace on the PyPy3.5 version due to a grant from the Mozilla Foundation, and some of those changes have been backported to PyPy2.7 where relevant.
- The PowerPC and s390x backend have been enhanced with the capability use SIMD instructions
- for micronumpy loops.
timeit to now report average +- standard deviation, which is
better than the misleading minimum value reported in CPython.
We now support building PyPy with OpenSSL 1.1 in our built-in _ssl module, as well as maintaining support for previous versions.
CFFI has been updated to 1.9, improving an already great package for interfacing with C.
As always, this release fixed many issues and bugs raised by the growing community of PyPy users. We strongly recommend updating.
You can download the PyPy2.7 v5.6 release here:
We would like to thank our donors for the continued support of the PyPy project.
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 modules to run on pypy, or general help with making RPython’s JIT even better.
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.
We also welcome developers of other dynamic languages to see what RPython can do for them.
This release supports:
- x86 machines on most common operating systems (Linux 32/64 bits, Mac OS X 64 bits, Windows 32 bits, OpenBSD, FreeBSD)
- newer ARM hardware (ARMv6 or ARMv7, with VFPv3) running Linux,
- big- and little-endian variants of PPC64 running Linux,
- s390x running Linux
Other Highlights (since 5.4 released Aug 31, 2016)¶
- New features
- Allow tests run with -A to find libm.so even if it is a script not a dynamically loadable file
- Backport fixes to rposix on windows from py3.5
- Allow user-defined
__getitem__on subclasses of
scandir()on posix systems
- Support more attributes on
- Issue #2386: non-latin1 unicode keys were ignored in
- Restore the ability to translate with CPython
- Update to CFFI 1.9.0
- Support the new buffer protocol in cpyext and numpypy
- Support full-precision nanosecond times in os.stat()
- Add documentation about the assembler backends to RPYthon
- Search for the stdlibs from the libpypy shared object rather than the pypy-c exe, changes downstream packaging requirements
'a'.strip(buffer(' '))like cpython (the argument to strip must be
warning.warn(('something', 1), Warning)like on CPython
rclockand add some more
CLOCK_xxxconstants on relevant platforms
- Backport the
faulthandlermodule from py3.5
- Improve the error message when trying to call a method where the
selfparameter is missing in the definition
- Support translation on FreeBSD running on PowerPC
- Issue warnings for stricter handling of
- When using
struct.unpack('q', ...try harder to prefer int to long
- Support OpenSSL version 1.1 (in addition to version 1.0)
- Bug Fixes
- Tweak a float comparison with 0 in backendopt.inline to avoid rounding errors
- Fix translation of the sandbox
- Fix for an issue where unicode.decode(‘utf8’, ‘custom_replace’) messed up the last byte of a unicode string sometimes
- fix some calls to functions through window’s COM interface
- fix minor leak when the C call to socketpair() fails
- make sure (-1.0 + 0j).__hash__(), (-1.0).__hash__() returns -2
- Fix for an issue where PyBytesResize was called on a fresh pyobj
- Fix bug in codewriter about passing the
exitswitchvariable to a call
- Don’t crash in
merge_if_blocksif the values are symbolics
- Issue #2325/2361: __class__ assignment between two classes with the same slots
- Issue #2409: don’t leak the file descriptor when doing
- Windows fixes around vmprof
- Don’t use
sprintf()from inside a signal handler
- Test and fix bug from the
guard_not_forced_2branch, which didn’t save the floating-point register
_numpypy.add.reducereturns a scalar now
- Performance improvements:
- Improve method calls on oldstyle classes
- Clean and refactor code for testing cpyext to allow sharing with py3.5
- Refactor a building the map of reflected ops in
- Improve merging of virtual states in the JIT in order to avoid jumping to the preamble
- In JIT residual calls, if the called function starts with a fast-path like
if x.foo != 0: return x.foo, then inline the check before doing the
make_inputargsfails properly when given arguments with type information
optimiseoptiterative instead of recursive so it can be reasoned about more easily and debugging is faster
- Refactor and remove dead code from
Please update, and continue to help us make PyPy better.