Mailman 3 July 2011 - pypy-dev

Sandboxing questions
by VanL July 17, 2011

July 17, 2011

I have a couple questions about the sandboxing feature: - Currently this is a two-process model, but early on the assertion was made that this could be done in a single process, perhaps but not necessarily separated by two OS-level threads. Is this (still?) true? What would you need to invoke to create such a pypy? - How granular can the control on imported/run functions be? Can you have a full interpreter that does everything, or an interpreter that allows socket access and that is it? Thanks, Van

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Düsseldorf sprint at the end of august?
by Antonio Cuni July 15, 2011

July 15, 2011

Hi all, I know that there is a vague plan to have a sprint in Düsseldorf in the last week of august, on time with the end of Eurostars. Can we make it more concrete, decided the dates, and announce it, please? It's very likely that I'll go on vacation in the 3rd week of august, thus it would be nice to know the dates to do a proper travel plan. ciao, Anto

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Re: [pypy-dev] Object identity and dict strategies
by Laura Creighton July 13, 2011

July 13, 2011

What do we want to happen when somebody -- say in a C extension -- takes the id of an object that is scheduled to be removed when the gc next runs? Laura

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Re: [pypy-dev] bounties for pypy
by Laura Creighton July 13, 2011

July 13, 2011

In a message of Wed, 13 Jul 2011 23:30:21 +0900, "Seung Soo, Ha" writes: >--===============0151346978== >Content-Type: multipart/alternative; boundary=0016e65b5d7e9f60b104a7f4413 >2 > >--0016e65b5d7e9f60b104a7f44132 >Content-Type: text/plain; charset=UTF-8 > >Has anyone considered? > >http://www.fossfactory.org > > >There are a lot of projects, and the money involved makes me believe that >they are worth considering. >http://www.fossfactory.org/… [View More]

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Compiling RPython with ctypes
by Andrew Evans July 12, 2011

July 12, 2011

Hello I am running into some snags developing an executable in pypy with translate.py and wondering what the best method for me to do this with my code would be. I am developing an Exploit Framework and one of the features I would like to have is compiling an executable. I am wondering if this is even possible with my code but it does run in the PyPy Interpreter As an example I would like to compile this code import array from ctypes import * myCode = array.array('b', "\xda\xde\xd9\x74\x24\… [View More]

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Object identity and dict strategies
by Alex Gaynor July 11, 2011

July 11, 2011

Hi all, I've now spoken with several developers about the object identity that arises out of hte new dict strategies, and all seem to think that the current implementation breaks Python's semantics, that is: x = 3 z = {x: None} assert next(iter(z)) is x will fail. The only solution I see to this that maintains the correct semantics in all cases is to specialize is/id() for primitive types. That is to say, all integers of any given value have the same id() and x is y is true. Doing x is y … [View More]

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integrity of code
by Samuel Ytterbrink July 9, 2011

July 9, 2011

Hi! I was just thinking and then ask my self... Dose writing things in RPython and then compile the code with translate and a c compiler make it as hard to read as a c program... thinking that python some times get a hard time being a commercial tool for app making, companies don't want end users to be able to read there code. Am i correct and if so are there any improvements you could do to make the interpreter read a more 'seacret' version of python code, some kinde of binary code( or dose … [View More]

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Re: [pypy-dev] Floating point computation
by Ilya Osadchiy July 9, 2011

July 9, 2011

>>> The Translation and JIT backend for PyPy may be able to allow Python >>> programmers to use SIMD instructions directly from Python. >> >> We kind of want to do that automatically for numpy operations. > > Can all basic SIMD instructions be mapped to numpy array operations? > If so, why doesn't numpy already use them? (Or does it?) > I think CPython's numpy may be compiled with auto-vectorization and therefore use SIMD. It also has optional … [View More]

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Floating point computation
by Zariko Taba July 8, 2011

July 8, 2011

Hi pypy list, I'd like to prototype an interpreter in rpython. But this interpreter must feature floating point support. Something like the context in the decimal module of python : (decimal is basically a floating point unit in python) import decimal # do an operation decimal.Decimal("6e4565465") * decimal.Decimal("6e67654") # Verify overflow decimal.getcontext().flags[decimal.Overflow] # leads 1 => overflow ! My interpreter must provide access to the "flags" field (OverFlow, Inexact, … [View More]

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pypy 1.5 on Windows: sqlite connection args
by Caleb Hattingh July 8, 2011

July 8, 2011

In lib-pypy/_sqlite3.py, line 239 (in Win 1.5 stable release) in class Connection(object): def __init__(self, database, isolation_level="", detect_types=0, timeout=None, cached_statements=None, factory=None): ...might need to become: def __init__(self, database, isolation_level="", detect_types=0, timeout=None, cached_statements=None, factory=None, *check_same_thread=False *): I am testing the web framework web2py against pypy, and this issue came up. I don't know too much about sqlite … [View More]

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