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[7:50] <rj0nes> hello, anyone home?
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[21:37] <exobyte> how can I compile some python code from either a sting or an input stream into a byte[] ? I want to feed it into the classloader
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[22:00] <agronholm> feed it into classloader? what for?
[22:17] <exobyte> agronholm: load some code dynamically
[22:17] <exobyte> agronholm: an eval, of sorts
[22:18] <agronholm> why not use actual eval then
[22:18] <exobyte> agronholm: I'm running it from java
[22:18] <agronholm> so?
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[22:18] <exobyte> agronholm: so maybe there's a jython eval method, BUT I'll be calling this often enough that I'd rather not eval it
[22:19] <agronholm> you could compile the code once and use the code object then
[22:20] <agronholm> PyInterpreter has a "compile" method that produces PyCode objects
[22:20] <exobyte> maybe, but I was thinking I actually want an object, so I really might want a class
[22:20] <agronholm> eh?
[22:21] <agronholm> you want an object so you really want a class? that doesn't make any sense
[22:21] <exobyte> I was thinking I might use inheritance to define my api
[22:21] <agronholm> how is this related?
[22:21] <exobyte> then have the jython code inherit from the java base class.
[22:21] <exobyte> it's how I'd use it in the java code
[22:22] <agronholm> ok I'm pretty confused now
[22:22] <agronholm> did you just change the requirements? because I don't see how feeding bytes to a class loader has anything to do with this
[22:23] <exobyte> if I want an object I can use with java code, I need the class loaded in
[22:23] <exobyte> I was thinking I could implement the class in python, then use jython to compile it at runtime
[22:23] <exobyte> but maybe I'll looking into PyInterpreter a bit
[22:23] <exobyte> *look
[22:24] <agronholm> why would you want to compile your python code at runtime?
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[22:24] <agronholm> I always do it statically at build time
[22:24] <exobyte> it's supplied by the user
[22:24] <exobyte> oh, sooooo
[22:24] <agronholm> I see
[22:24] <exobyte> I want to provide a scripting facility
[22:24] <agronholm> look into jsr223 then
[22:25] <exobyte> I saw that mentioned on the jruby page
[22:25] <agronholm> oh, and if you do, use the latest build
[22:25] <exobyte> (I'm also debating languages, still)
[22:25] <agronholm> jsr223 is broken in 2.5.1
[22:25] <exobyte> latest *build*, not release, right?
[22:25] <agronholm> yeah
[22:25] <agronholm> 2.5.1 is the latest release
[22:25] <agronholm> and the devs are really dragging their feet with the 2.5.2 release
[22:26] <exobyte> I'll poke around
[22:26] <agronholm> PyInterpreter should be problem free though
[22:27] <exobyte> my big question: would you go with jython, jruby, or groovy? There's a case to be made for all of them, and I'm sure you're biased, but I'm still curious to hear opinions
[22:27] <agronholm> I don't know much about groovy
[22:28] <agronholm> jruby is apparently faster than jython
[22:28] <agronholm> although that's not saying much :)
[22:28] <exobyte> the jython website claims it's about as fast as cpython
[22:28] <agronholm> jruby?
[22:28] <exobyte> jython
[22:28] <agronholm> what? where?
[22:29] <agronholm> jython is many times slower than cpython
[22:29] <exobyte> groovy is like a java scriping language. it's more or less a scripty syntax for java that compiles to .class
[22:29] <agronholm> jython's only application is bridging python and java
[22:29] <agronholm> it's too slow for anything else
[22:30] <agronholm> it'll be interesting how much faster it'll get with java 7 though
[22:30] <agronholm> since java 7 supports dynamic languages in the vm
[22:30] <exobyte> it's significantly slower when it's compiled, too?
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[22:31] <agronholm> yeah
[22:31] <agronholm> I always precompile my python code before I package it
[22:31] <agronholm> takes more space but avoids compilation overhead
[22:32] <exobyte> so what's a typical jython use case?
[22:32] <agronholm> allowing python scripting in a java app, or running a python webapp on top of tomcat or some java ee server
[22:33] <agronholm> my case is that I have a swing app that is an EJB client, and I'm porting it to python, piece by piece
[22:33] <exobyte> but the scripting would be kinda slow. I take it something like django under tomcat would be kinda slow?
[22:33] <agronholm> jython allows me to incrementally convert pieces from here and there to python, and users are none the wiser
[22:34] <agronholm> scripting is hardly expected to be fast anyway
[22:35] <exobyte> neither is java...
[22:35] <exobyte> I should write a C JIT compiler
[22:35] <agronholm> another?
[22:36] <agronholm> or you mean, opposed to a C++ one?
[22:36] <exobyte> it seems my idea has been taken...
[22:36] <agronholm> what do you think hotspot does?
[22:36] <exobyte> c++ is so close to a superset of c
[22:36] <agronholm> and gcj compiles java code to a native executable
[22:37] <agronholm> you lose dynamic class loading capabilities then though
[22:37] <exobyte> it only compiles t "c" in the sense that c is very close to unix and hardware
[22:37] <exobyte> *to
[22:37] <agronholm> what was that a reply to?
[22:37] <exobyte> "what do you think hotspot does?"
[22:38] <agronholm> hotspot is a JIT compiler for the sun jvm
[22:38] <agronholm> it's pretty fast
[22:39] <exobyte> anyway, I have more poking around to do. What's the benefit of jsr223 over jyinterpreter?
[22:39] <agronholm> standardized interface
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[22:39] <exobyte> ahh
[22:40] <exobyte> but the backend (at leasr for jython) is the same?
[22:41] <agronholm> I'm pretty sure it is
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