Thanks, Coleman.

You really helped me and now it works. The problem was that I didn't provide the full path for the .jar file. When I initially added that file to sys.path successfully, I just assumed that it was being accessed all right, but this was wrong. I didn't know that you can even add a non-existent file to the path.

Anyway, may I ask another question? Why is it that I need a .jar file for the Stanford parser while I can access other built-in Java classes without it, just by specifying the directory path and class name (which is in .java format)?

I would like to add points to your reputation on this site, but I din't know how to do that. I would appreciate if you can tell me how.

Thank you very much.

Don Coleman 쓴 글:
You need standford-parser.jar in the classpath, not stanford-parser-2008/src.

Jython won't compile Java source.

The stanford-parser-2008 folder does not need to be inside the
jython-2.2.1 directory

Here's the steps I followed

Download
$ curl -O http://www-nlp.stanford.edu/downloads/stanford-parser-2008-10-26.tgz

Untar
$ tar xzf stanford-parser-2008-10-26.tgz

Change to the directory with the parser
$ cd stanford-parser-2008-10-26

Check the make sure the parser works
$ ./lexparser.csh testsent.txt

Try in jython
$ jython
Jython 2.2.1 on java1.6.0_07
Type "copyright", "credits" or "license" for more information.
  
import sys
sys.path.append('stanford-parser.jar')
from edu.stanford.nlp.parser import Parser
        

This assumes that stanford-parser.jar is in the same directory where
you start Jython.  If inot, enter the full path to
standford-parser.jar
  
sys.path.append('/tmp/stanford-parser-2008-10-26/stanford-parser.jar')
        

There is a build.xml script in stanford-parser-2008-10-26.  If you
have apache ant installed, you can build the code by typing "ant".
Then you can add the directory with the compiled classes instead of
standford-parser.jar
  
sys.path.append('/tmp/stanford-parser-2008-10-26/classes)
        


On Sun, Mar 15, 2009 at 7:56 AM, Jinseung Eu
<jinseung.eu@ling-phil.ox.ac.uk> wrote:
  
Hello!

I am having a trouble using a program called Stanford Parser 1.6.1 (To unzip
it, you may have to unzip it twice):
(http://www-nlp.stanford.edu/downloads/lex-parser.shtml#Download).

I have posted several messages but have not received a full solution. So I
am posting it again with all updates.

I renamed the unzipped folder as "stanford-parser-2008" and put it inside
the jython 2.2.1 folder and added the path as follows:

    
import sys
sys.path.append("stanford-parser-2008\\src")

        
Then I accessed the following packages within src, and this worked:
    
import edu.stanford.nlp.parser

        
But when I try to access a class within it I get an error:

    
import edu.stanford.nlp.parser.Parser
        
Traceback ...
File "<console>"....
ImportError: no module named Parser

    
from edu.stanford.nlp.parser import Parser
        
Traceback ...
File "<console>"....
ImportError: cannot import name Parser

This problem was encountered by someone else two years ago
(http://www.nabble.com/Importing-non-builtin-java-modules-to8957425.html#a8999193)
Here Charlie resolves the issue by adding "stanford-parser.jar" to sys.path.
--> But this doesn't work for me. I don't know why. Do I need to put the
unzipped folder somewhere else?

Below, Jeff suggests I need to compile the "Parser.java" file to
"Parser.class" file.
--> I tried the compilation but failed (Perhaps I put the file in the wrong
place for compilation, or the file is not meant to be compiled).
--> Also I am not entirely convinced that a .class file is necessary here.
Jython can import .java files like System.java (in java.lang) and
Random.java (in java.util). Then, why do I have to have a .class file for
the Stanford parser? /

Can someone please help me get solve this puzzle?
Thanks a lot.

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