PyPy 1.4 released

Posted Nov 29, 2010 20:54 UTC (Mon) by Velmont (guest, #46433)
Parent article: PyPy 1.4 released

Soooooo... Let me get this straight.

Your scripts is running ontop of PyPy which is itself running on top of CPython. And this is faster because PyPy does optimizations?

PyPy 1.4 released

Posted Nov 29, 2010 21:40 UTC (Mon) by tseaver (guest, #1544) [Link] (5 responses)

CPython is not anywhere in the picture. PyPy is self-hosting at
this point. See http://en.wikipedia.org/wiki/PyPy .

PyPy 1.4 released

Posted Nov 29, 2010 21:48 UTC (Mon) by dlang (guest, #313) [Link] (4 responses)

it can't be python all the way down, at some point it needs to go to something else.

so are the speed improvements with pypy running on Cpython, running on Java, running on .NET, or producing C code that then gets compiled?

I would expect significant variations in the performance of these different options.

I'm disappointed to read that they abandoned the ability to run on javascript, as that would have made it easier to migrate python code from server-side to client-side.

PyPy 1.4 released

Posted Nov 29, 2010 23:42 UTC (Mon) by drag (guest, #31333) [Link] (1 responses)

With Pypy your using a python program to compile a python interpreter written in python. The resulting executable is pypy-c and that is what you use to run your programs.

Similar to how with GCC your using a C compiler to compile a C compiler written in C that is used to compile other C programs.

The point of it is that they can spend more time experimenting and working out optimizations then if they don't have to waste their time farting around with making C work.

PyPy 1.4 released

Posted Dec 2, 2010 17:02 UTC (Thu) by Velmont (guest, #46433) [Link]

Sooo... pypy compiles the compiler to machine code?

But, could it also compile my python programs then?

PyPy 1.4 released

Posted Nov 30, 2010 14:27 UTC (Tue) by kfiles (guest, #11628) [Link] (1 responses)

I'm disappointed to read that they abandoned the ability to run on javascript, as that would have made it easier to migrate python code from server-side to client-side.

For that, there's still pyjamas, right?

PyPy 1.4 released

Posted Nov 30, 2010 23:13 UTC (Tue) by rasjidw (guest, #15913) [Link]

The most promising project that will hopefully enable Python in the web-browser that I have found is emscripten. It uses LLVM to compile C-code to LLVM bitcode, and then compiles that to javascript. There is already a working Lua interpreter done using emscripten, and there is a demo of it here. Python 2.6 already compiles with emscripten, but there are some lower level system calls that still need to be worked out and emulated.

Unlike most other attempts at getting Python to run in the browser, this is not a new implementation of Python, but real CPython compiled to Javascript, so it should even be possible to get C-extensions working.