jython-users

[Jython-users] Re: ANN: Jython-2.0 released

[Jan D. <jan...@fr...>]

Finn Bock wrote:
> 
> I am happy to announce the release of Jython 2.0.
> 

I just downloaded Jython2.0, and tried it out on some of my CPython
files. I got in trouble with something that looks OK to me, and that
works fine in CPython. I've simulated it in interactive mode:

Jython 2.0 on java1.1.4 (JIT: null)
Type "copyright", "credits" or "license" for more information.
>>> import re
>>> print re.split("=","X=10")
['X', '10']
>>> print re.split(r"\s=\s","X = 10")
['X', '10']
>>> print re.split(r"\s+=\s+","X = 10")
['X', '10']
>>> print re.split(r"\s*=\s*","X = 10")
Traceback (innermost last):
  File "<console>", line 1, in ?
  File "C:\WINNT\Java\jython-2.0\Lib\sre.py", line 56, in split
  File "C:\WINNT\Java\jython-2.0\Lib\sre.py", line 151, in _split
java.lang.ArrayIndexOutOfBoundsException

Is this a bug, or does Jython use another RE syntax?

Regards,
Jan

Re: [Jython-users] Re: ANN: Jython-2.0 released

[Venkatesh P. R. <rvp...@ci...>]

Hi,

I tried the same example with jython 2.0 (jre/jdk 1.3.0 on a linux box) and it
works fine.  Can it be something to do with the underlying jvm?  Guessing.

 - Venkatesh

Re: [Jython-users] Re: ANN: Jython-2.0 released

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

On Fri, 19 Jan 2001 05:14:08 +0100, you wrote:

>I just downloaded Jython2.0, and tried it out on some of my CPython
>files. I got in trouble with something that looks OK to me, and that
>works fine in CPython. I've simulated it in interactive mode:
>
>Jython 2.0 on java1.1.4 (JIT: null)
>Type "copyright", "credits" or "license" for more information.
>>>> import re
>>>> print re.split(r"\s*=\s*","X = 10")
>Traceback (innermost last):
>  File "<console>", line 1, in ?
>  File "C:\WINNT\Java\jython-2.0\Lib\sre.py", line 56, in split
>  File "C:\WINNT\Java\jython-2.0\Lib\sre.py", line 151, in _split
>java.lang.ArrayIndexOutOfBoundsException
>
>Is this a bug, or does Jython use another RE syntax?

The Jython RE syntax is exactly the same as CPython2.0. What you have
encountered is a bug in the Microsoft JVM. 

To workaround the bug, you can either:

- Install some other JVM. I use javasoft SDK myself.
    http://www.javasoft.com/j2se/

- Enable the apache ORO matcher. You enable the ORO matcher by
  adding this line to your <jython.home>/registry file:
    python.modules.builtin = re

By rewriting the code a little bit, I have avoided the MS bug, so the
problem will not exist in the next release of jython.

regards,
finn

Re: [Jython-users] Re: ANN: Jython-2.0 released

[D-Man <ds...@ri...>]

On Fri, Jan 19, 2001 at 12:33:50PM +0000, Finn Bock wrote:
[snip]
| The Jython RE syntax is exactly the same as CPython2.0. What you have
| encountered is a bug in the Microsoft JVM. 

Surprising?  ;-)

[snip] 
| By rewriting the code a little bit, I have avoided the MS bug, so the
| problem will not exist in the next release of jython.

IMO, you shouldn't be expending effort to fix M$ bugs Finn.  But I'm
sure the people using the M$ JVM will appreciate it.  You certainly
work hard to make jython work the Right Way.  :-)

| 
| regards,
| finn
| 

-D