[pypy-dev] Some Newbie Questions

[phyo.arkarlwin at gmail.com]

Thank you very much fijal , you have clear me up a lot of confusions.

>That's possible, although far in the future. Look here:
>http://moderator.appspot.com/ and search for pypy.

Very interesting , Do you think it will happen in next release of pypy
, next 2-3 years? As speed  (pypy-c) is already reaching to that of
Cpython .

>Have to use for what? If you want to participate in PyPy project, you
>probably need to know a bit about rpython, otherwise no, you don't.
>That can be gradual and relatively painless though :) (probably better
>han learning C or CPython's C API)

For contributing Pypy and If Guido retired , pypy may be at the level
to be able to continue Python development via pypy  (may be one real
choice).

>The simple answer is: they don't follow RPython. I'm pretty sure about
>this. You need to rewrite them from scratch, at least in parts for
>that. It's not very helpful.

i have some existing project which i would like to turn to C and
compile . All i need to is to follow RPython right ? After that How
can i compile to C ?


Oh one question , what is pypy's JIT for ?

And i will be joining to #pypy now.



On 11/26/08, Maciej Fijalkowski <fijall at gmail.com> wrote:
> On Wed, Nov 26, 2008 at 12:29 PM, Phyo Arkar <phyo.arkarlwin at gmail.com>
> wrote:
>> Hi Pypy Devs!
>>
>> I love python so much and I am so exicted by this ambitious project!
>>
>> What I understand about this Project is to develop a version of python
>> , which is written in Pure Python .  SO now , i do not have C Skills
>> but I can Develop , Tweak , Make changes to python Just in Python , Am
>> I Right? SO In Future , it is possible that Guido himself will be
>> developing python in PyPy ?
>
> That's possible, although far in the future. Look here:
> http://moderator.appspot.com/ and search for pypy.
>
>>
>> Question : I have to use Python Or  RPython?
>
> Have to use for what? If you want to participate in PyPy project, you
> probably need to know a bit about rpython, otherwise no, you don't.
> That can be gradual and relatively painless though :) (probably better
> than learning C or CPython's C API)
>
>>
>> Also  By doing so , We can convert Python to Any langauge of Choice ,
>> which is very interesting.
>
> No, only restricted subset of it, RPython.
>
>>
>> I have build pypy-c with optimization Level 3 and stackless , whcih is
>> done flawlessly. I have seen benchmarks on one of the page and now
>> PyPy is even faster then Normal python 2.5 827 vs 810 ms on Richard
>> Test, it is very interesting .
>>
>> Question : Resulting pypy-c is python 2.4.1 , is there python 2.5
>> Version of pypy-c avaliable? I saw a branch about it before by a GSOC
>> student but now is that already marged ?(my version svn is 4 days ago)
>
> Yes, it's merged into pypy-trunk. Download it from svn from here:
> http://codespeak.net/svn/pypy/trunk/
>
>>
>> If that arleady marged , how can i build it to get pypy-c with python
>> 2.5 support?
>
> Exactly like 2.4, just use trunk.
>
>>
>> Another Questions is , If i follow my Python code in RPython , Can i
>> converty RPythonic Code to C and compile ? SO it is possilbe to
>> convert Existing Python Projects into C (if they follow Rpython)?
>
> The simple answer is: they don't follow RPython. I'm pretty sure about
> this. You need to rewrite them from scratch, at least in parts for
> that. It's not very helpful.
>
>> Another , i compiled pypy-c in stackless , which is faster in term of
>> pypy-c's perfomance? normal or stackless?
>
> normal, although not by much. There is also an experimental option
> --gcrootfinder=asmgcc which makes it even faster, but does not
> cooperate well with ctypes for example.
>
>> Also doing  , what are the extra modules added with --allworkingmodules ?
>
> You should have list when you start compiling. For linux machine, it's:
>
>     ["_socket", "unicodedata", "mmap", "fcntl",
>       "rctime" , "select", "zipimport", "_lsprof",
>      "crypt", "signal", "dyngram", "_rawffi", "termios", "zlib",
>      "struct", "md5", "sha", "bz2", "_minimal_curses", "cStringIO",
>      "thread", "itertools"]
>
> (copy-pasted from file)
>
>>
>> I am hoping in near future , i can help in this project after enough
>> understanding .
>
> You're very much welcomed to do so. Come on #pypy on IRC, it's better
> then mail sometimes.
>
>>
>> Regards,
>>
>> Phyo.
>> _______________________________________________
>> pypy-dev at codespeak.net
>> http://codespeak.net/mailman/listinfo/pypy-dev
>>
>
> Cheers,
> fijal
>