Today I (again) tried to use web.py running with Jython. I do not use
the web.py templating but XSLT 2 (via Saxon) instead which is also the
reason to use Jython at all...
I had to do two hacks in web.py, maybe it would be possible to add
them to the code itself?
1. removed usage of compiler module
I simple removed these lines in template.py (~line 941) as Jython has
no compiler module. Guess as long as no templating is used this would
be fine?
# make sure code is safe
# import compiler
# ast = compiler.parse(code)
# SafeVisitor().walk(ast, filename)
Maybe one could rewrite it as
try:
import compiler
except ImportError, e:
# alert the user that templating won't work properly
else:
ast = compiler.parse(code)
SafeVisitor().walk(ast, filename)
2. Reloader does not work so simple removed it
In application.py ~line 652 I added a simple "return" and web.py
works. Reloader does not work obviously as it does not check any
modules. Is there any way to prevent web.py to use it in the first
place?
Problem is in line 654 mtime = os.stat(mod.__file__).st_mtime which
seems to raise a different (Java) exception when mod.__file__ is None.
One could as a catch all except or check for None before trying?
I guess this really is a Jython bug which probably should simple raise
one of the catched (AttributeError, OSError, IOError) but that change
will probably take sooome time...
Another annoying issue is that when defining the URL mapping like
URLS = (
r'/(.*?)\/?', 'pkg.mod.Handlerclass'
...
)
Jython is unable to import pkg.mod. If pkg import mod itself which in
Python is not needed this does work though. Again a Jython issue I
guess but this time easier to work around in the actual application.
Otherwise web.py and Jython work just fine. Being able to use an XSLT2
processor like Saxon in Jython (sadly no one available for Python...)
is really nice.
Any chance the two compatibility workarounds could be added to web.py?
Thanks,
Chris
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