Search engine using xapian

handler.wsgi

import sys
import xapian
import string
from config_file import *

def indexThread(thread_id, content):
    try:
        # Open the database for update, creating a new database if necessary.
        database = xapian.WritableDatabase(db_global, xapian.DB_CREATE_OR_OPEN)
        indexer = xapian.TermGenerator()
        stemmer = xapian.Stem("english")
        indexer.set_stemmer(stemmer)
        try:   
            doc = xapian.Document()
            doc.set_data(content)
            doc.add_value(id_global, thread_id)
            indexer.set_document(doc)
            indexer.index_text(content)
            database.add_document(doc)
        except Exception as e:
            print(str(e))

    except Exception, e:
        print >> sys.stderr, "Exception: %s" % str(e)
        sys.exit(1)        

search.py

import sys
import xapian
from config_file import *

def search(terms):    
    try:
        # Open the database for searching.
        database = xapian.Database(db_global)

        # Start an enquire session.
        enquire = xapian.Enquire(database)

        # Combine the rest of the command line arguments with spaces between
        # them, so that simple queries don't have to be quoted at the shell
        # level.
        query_string = str.join(' ', terms)

        # Parse the query string to produce a Xapian::Query object.
        qp = xapian.QueryParser()
        stemmer = xapian.Stem("english")
        qp.set_stemmer(stemmer)
        qp.set_database(database)
        qp.set_stemming_strategy(xapian.QueryParser.STEM_SOME)
        query = qp.parse_query(query_string)

        # Find the top 10 results for the query.
        enquire.set_query(query)
        matches = enquire.get_mset(0, 10)

        # Display the results.
        #print "%i results found." % matches.get_matches_estimated()
        #print "Results 1-%i:" % matches.size()
        results = [] 
        for m in matches:
            result = {  "id" : m.document.get_value(id_global),
                        "content" : m.content,
                        "rank" : m.rank+1
                     }
            results.append(d)
        return results
    except Exception, e:
        raise Exception