Mailman 3 April 2013 - pypy-dev

PyPy-Performance versus various other VMs
by Dimitri Vorona 08 Apr '13

08 Apr '13

Hi everyone, just wanted to bring to your attention this blog post: http://attractivechaos.wordpress.com/2013/04/06/performance-of-rust-and-dar… . PyPy ist compared with various dynamic and static languages. While the perfomance is still OK (within an order of magnitude of C), it places last by a quite big margin. I would like to know if these result match your benchmarks or is the implementation of the sudoku solver non-optimal for pypy (can be seen here https://github.com/attractivechaos/plb/blob/master/sudoku/sudoku_v1.py) Regards, Dmytro Vorona.

4 3

about PyPy's sandbox
by 王衡 08 Apr '13

08 Apr '13

Hi: About PyPy's sandbox,I want to ask you a question: In PyPy's sandbox ,a lot of standard libraries can not be used.If I want use it,how could I add it in PyPy's sandbox? (you can assume I have verify the module's safety)

2 1

Re: [pypy-dev] [pypy-commit] pypy py3k: disable interp level W_IntObject tests
by Maciej Fijalkowski 05 Apr '13

05 Apr '13

why is W_IntObject not used in py3k? it should just have a different typedef On Fri, Apr 5, 2013 at 3:10 AM, pjenvey <noreply(a)buildbot.pypy.org> wrote: > Author: Philip Jenvey <pjenvey(a)underboss.org> > Branch: py3k > Changeset: r63038:b0b275ecce2a > Date: 2013-04-04 18:08 -0700 > http://bitbucket.org/pypy/pypy/changeset/b0b275ecce2a/ > > Log: disable interp level W_IntObject tests > > diff --git a/pypy/objspace/std/test/test_intobject.py b/pypy/objspace/std/test/test_intobject.py > --- a/pypy/objspace/std/test/test_intobject.py > +++ b/pypy/objspace/std/test/test_intobject.py > @@ -5,8 +5,10 @@ > from rpython.rlib.rarithmetic import r_uint, is_valid_int > from rpython.rlib.rbigint import rbigint > > +class TestW_IntObject: > > -class TestW_IntObject: > + def setup_class(cls): > + py.test.skip("W_IntObject was replaced w/ W_LongObject in py3k") > > def _longshiftresult(self, x): > """ calculate an overflowing shift """ > _______________________________________________ > pypy-commit mailing list > pypy-commit(a)python.org > http://mail.python.org/mailman/listinfo/pypy-commit

3 2

understanding and fixing rtyper warnings
by wlavrijsen＠lbl.gov 04 Apr '13

04 Apr '13

Hi, say I have something like this during translation: [rtyper:WARNING] SomeInstance(can_be_None=True, classdef=pypy.interpreter.baseobjspace.W_Root) can be null, but forcing non-null in dict key [rtyper:WARNING] SomeInstance(can_be_None=True, classdef=pypy.interpreter.baseobjspace.W_Root) can be null, but forcing non-null in dict value [rtyper:WARNING] SomeInstance(can_be_None=True, classdef=pypy.interpreter.baseobjspace.W_Root) can be null, but forcing non-null in dict key [rtyper:WARNING] SomePBC(can_be_None=True, const=None, subset_of=None) can be null, but forcing non-null in dict value what are my chances to find out whether a) my code is responsible, and b) if there's anything that can be done about it? I.e. is there are way of getting more information, like file name and line number? I tried finding the locations where I do not enforce can_be_None=False and if the result is put in a dictionary, but there's nothing that stands out. Thanks, Wim -- WLavrijsen(a)lbl.gov -- +1 (510) 486 6411 -- www.lavrijsen.net

5 9

2.x -> 2 lib rename
by Maciej Fijalkowski 03 Apr '13

03 Apr '13

hello everyone I'm incredibly unhappy about the 2.7 -> 2 lib rename. It broke virtualenv, there is no recent virtualenv available and there is absolutely no good reason why we did that. I'm now spending tons of time trying to think how to update virtualenv to a TOT version a bit everywhere. I'm inclined to do a simple revert (or re-rename it) Cheers, fijal

4 5

Regarding GSOC 2013
by Amit Jamadagni 02 Apr '13

02 Apr '13

Hello, I am G.Amit Jamadagni, a student of BITS-Pilani.I am pursuing Masters in Mathematics along with it engineering in Electronics and Electrical Engineering.I have gone through the ideas list and have found the idea of porting to ARM v6 interesting (since pypy can be extended to raspberry pi).Coming to my experience I have worked around raspberry pi (still not that much into electronics) but have written some assembly code with some help from the web.I have some good knowledge about python and have contributed to some open source projects. Github Handle : amitjamadagni. I hope I can work through this and draft a good proposal for SoC.I would like to know if there are any patch requirements for the same.And also about the project I referred to above in detail.Thanks.

2 1

Re: [pypy-dev] [pypy-commit] pypy default: unroll isinstance checks with old style classes
by Maciej Fijalkowski 02 Apr '13

02 Apr '13

On Tue, Apr 2, 2013 at 5:30 AM, alex_gaynor <noreply(a)buildbot.pypy.org> wrote: > Author: Alex Gaynor <alex.gaynor(a)gmail.com> > Branch: > Changeset: r62924:73524812269e > Date: 2013-04-01 20:30 -0700 > http://bitbucket.org/pypy/pypy/changeset/73524812269e/ > > Log: unroll isinstance checks with old style classes > > diff --git a/pypy/module/__builtin__/abstractinst.py b/pypy/module/__builtin__/abstractinst.py > --- a/pypy/module/__builtin__/abstractinst.py > +++ b/pypy/module/__builtin__/abstractinst.py > @@ -94,9 +94,8 @@ > return w_obj.w_class.is_subclass_of(w_klass_or_tuple) > return _abstract_isinstance_w_helper(space, w_obj, w_klass_or_tuple) > > -(a)jit.dont_look_inside > + > def _abstract_isinstance_w_helper(space, w_obj, w_klass_or_tuple): > - > # -- case (anything, abstract-class) > check_class(space, w_klass_or_tuple, > "isinstance() arg 2 must be a class, type," > @@ -111,7 +110,7 @@ > return _issubclass_recurse(space, w_abstractclass, w_klass_or_tuple) > > > -(a)jit.dont_look_inside > +(a)jit.unroll_safe > def _issubclass_recurse(space, w_derived, w_top): > """Internal helper for abstract cases. Here, w_top cannot be a tuple.""" > if space.is_w(w_derived, w_top): > _______________________________________________ > pypy-commit mailing list > pypy-commit(a)python.org > http://mail.python.org/mailman/listinfo/pypy-commit That definitely requires a test_pypy_c

2 1

prevent extension module code from being executed during startup?
by wlavrijsen＠lbl.gov 01 Apr '13

01 Apr '13

Hi, when starting pypy-c, I get some extension module code executed before that module is imported. The code in question is in pypy/module/cppyy/pythonify.py: gbl = make_cppnamespace(None, "::", None, False) # global C++ namespace gbl.__doc__ = "Global C++ namespace." sys.modules['cppyy.gbl'] = gbl This code is not rpython code. The module is first mentioned in the __init__.py of cppyy: appleveldefs = { 'gbl' : 'pythonify.gbl', 'load_reflection_info' : 'pythonify.load_reflection_info', 'add_pythonization' : 'pythonify.add_pythonization', } How can I prevent that code from being executed at startup, i.e. have it deferred all the way until "import cppyy"? The use case is as follows: I have a prototype where I load the Reflex library (and associated C-API) at run-time, using _cffi_backend. That way, it is no longer necessary to link pypy-c with libReflex.so. I can handle a missing .so silently, but would prefer to raise an ImportError. However, for that to work, I need to make sure nothing of the module gets touched until it's imported, so that the error is reported at the right time. Thanks, Wim -- WLavrijsen(a)lbl.gov -- +1 (510) 486 6411 -- www.lavrijsen.net

2 6