On Sep 20, 12:05 am, exar...@twistedmatrix.com wrote: > Does pyjamas convert any Python program into a JavaScript program with > the same behavior?
that's one of the sub-goals of the pyjamas project, yes. > I don't intend to imply that it doesn't - I haven't > been keeping up with pyjamas development, so I have no idea idea. I > think that the case *used* to be (perhaps a year or more ago) that > pyjamas only operated on a fairly limited subset of Python. If this was > the case but has since changed, it might explain why some people are > confused to hear pyjamas called a Python implementation now. yup. "-O" now equals [roughly] pyjamas 0.3 to 0.5p1 behaviour, aka "pythonscript" - a mishmash of python grammar/syntax with javascriptic execution. since kees joined, he's been steaming ahead with python interoperability (--strict option). he first started out by improving the pyjamas compiler and support libraries to the point where the python version of http://puremvc.org could be compiled to javascript as-is, and it's gone from there, really. on the roadmap is to take a look at what the unladen/swallow team have done, when they get to their stage 2 "unboxing", and see if calling out to PyV8 or Python-SpiderMonkey objects can be done from intobject.c, longobject.c etc. if the early experiments are anything to go by, python will then have _yet another_ python accelerator. but, really, for that to properly happen, python has _got_ to get some type-checking decorators on functions: @paramtypecheck(foo=int, bar=[int, str]) @paramtypecheck(int, [int, str]) # or this @returntypecheck(int) def randomfunction(foo, bar): if isinstance(bar, str): bar = int(bar) return foo + bar this kind of type-checking guidance would _drastically_ help out all of the compilers (such as that python-to-c++ one), and could probably also be utilised by http://python.org itself, ultimately, to speed up function execution. it's also just good software engineering practice to check parameters and return results. l. -- http://mail.python.org/mailman/listinfo/python-list
