Here is PyPy 1.4.1 :-)
Update: Win32 binaries available.
We're pleased to announce the 1.4.1 release of PyPy. This release consolidates all the bug fixes that occurred since the previous release. To everyone that took the trouble to report them, we want to say thank you.
What is PyPy¶
PyPy is a very compliant Python interpreter, almost a drop-in
replacement for CPython. Note that it still only emulates Python
2.5 by default; the
fast-forward branch with Python 2.7
support is slowly getting ready but will only be integrated in
the next release.
In two words, the advantage of trying out PyPy instead of CPython (the default implementation of Python) is, for now, the performance. Not all programs are faster in PyPy, but we are confident that any CPU-intensive task will be much faster, at least if it runs for long enough (the JIT has a slow warm-up phase, which can take several seconds or even one minute on the largest programs).
Note again that we do support compiling and using C extension
modules from CPython (
pypy setup.py install). However, this
is still an alpha feature, and the most complex modules typically
fail for various reasons; others work (e.g.
PIL) but take a
serious performance hit. Also, for Mac OS X see below.
Please note also that PyPy's performance was optimized almost exclusively on Linux. It seems from some reports that on Windows as well as Mac OS X (probably for different reasons) the performance might be lower. We did not investigate much so far.
- We migrated to Mercurial (thanks to Ronny Pfannschmidt and
Antonio Cuni) for the effort) and moved to bitbucket. The new
command to check out a copy of PyPy is:
hg clone https://bitbucket.org/pypy/pypy
- In long-running processes, the assembler generated by old JIT-compilations is now freed. There should be no more leak, however long the process runs.
- Improve a lot the performance of the
binasciimodule, and of
sys.setrecursionlimit()a no-op. Instead, we rely purely on the built-in stack overflow detection mechanism, which also gives you a RuntimeError -- just not at some exact recursion level.
- Fix argument processing (now e.g.
pypy -OScpassworks like it does on CPython --- if you have a clue what it does there
- cpyext on Mac OS X: it still does not seem to work. I get systematically a segfault in dlopen(). Contributions welcome.
- Fix two corner cases in the GC (one in minimark, one in
asmgcc+JIT). This notably prevented
pypy translate.py -Ojitfrom working on Windows, leading to crashes.
- Fixed a corner case in the JIT's optimizer, leading to
Fatal RPython error: AssertionError.
- Added some missing built-in functions into the 'os' module.
- Fix ctypes (it was not propagating keepalive information from c_void_p).