Re: [Jython-dev] jythonc "from blah import stuff, stuff" bug

[<bc...@wo...>]

[Chris Monson]

>First of all, I love Jython!  I have done some amazing things with it in 
>the two days of experience that I have :)
>
>I have an application working in Jython, and I am currently trying to 
>get the applet to work, as well.  I am using Jython 2.1a3 with JDK 
>1.3.1_01 from Sun.
>
>I did the following:
>
>jythonc --core --deep --jar myapplet.jar myapplet.py
>
>And it produced the appropriate jar file with all of the fixings, as 
>expected.
>
>However, when trying to invoke the applet with appletviewer (or in a 
>browser plugin), I got the following:
>
>    java.lang.NoClassDefFoundError: org/python/compiler/JavaMaker
>
>I finally isolated it to this line of python code:
>
>    from java.awt import Panel, Font, Button, Panel, Color, Label
>
>Notice that 'Panel' is imported twice in that list.  That was causing 
>the problem (but the error was not very helpful at all).  Once I removed 
>the spurious Panel import, I stopped getting that particular error.
>
>I am currently struggling with a different error, but the one above is 
>clearly (IMHO) a Jython bug, and I figured I should let you guys know.

I have added a bugreport about it, but I doubt I'll bother to fix it.
Jythonc does a static analysis of all the assignments going on in the
python script and this analysis does not handle re-assignments to the
same name. I agree that jythonc can be improved so it recognizes that
Panel is obviously bound to the same value.

regards,
finn