[Jython-users] Re: $py.class files and importing from zipfiles

[<Mar...@am...>]

OK, well it looks like the easiest solution fo rme might be to simply 
pre-compile the system modules.  I found the "compileall.py" script in the 
Lib folder, and it does exactly what I want.  I just have one question... 
Should this be run with the same JRE that my product ships with, or does 
it matter?  I develop with 1.5, but I ship with 1.4.2_07.  Can I compile 
the modules and check them into CVS, or should I do it as part of my build 
process, or even as part of the installer?

Thanks,
Mark.
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Hi There,

I am packaging Jython as part of a plugin that is installed with a 
product.  Currently, I have the /Lib folder filled with system modules 
(.py files) located in my plugin as well, and my plugin location is set as 
my "python.home" location, so it finds everything just fine.  The problem 
is, when I import a system module, Jython compiles it to a $py.class file 
in that folder, and this rapidly creates a lot of junk in my plugin 
directory, but not only that - when the user does not have write access to 
this folder - I assume something bad will happen??

What I am wondering is:

Is there any way to tell Jython to create the $py.class files in a certain 
folder (ideally I'd like them to go in the cachedir, but that doesn't 
appear to be possible)?
What *will* happen if Jython can't write the $py.class file?
I tried zipping everything up and appending the zipfile to sys.path - 
which seems to work - but it looks like it doesn't create the $py.class 
file anywhere in this case.  I assume it is just compiling it to memory 
every time it is imported, and not caching it at all?  I guess this is 
what will happen if it can't write the $py.class file normally...\
If I can't tell Jython to place these $py.class files anywhere, is there 
any *easy* way to pre-compile the entire system library (meaning all of 
the .py files in the /Lib folder)?

Thanks for your help,
Mark.
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