encoding error

[halagamal2009 at gmail.com]

i'm trying to make indexing of csv file contain arabic words
my code:
from whoosh import fields, index
import os.path
import csv
import codecs
# This list associates a name with each position in a row
columns = ["juza","chapter","verse","voc","analysis", "unvoc","root"]

schema = fields.Schema(juza=fields.NUMERIC,
                       chapter=fields.NUMERIC,
                       verse=fields.NUMERIC,
                       voc=fields.TEXT,
                       analysis=fields.KEYWORD,
                       unvoc=fields.TEXT,
                       root=fields.TEXT)


# Create the Whoosh index
indexname = "index"
if not os.path.exists(indexname):
  os.mkdir(indexname)
ix = index.create_in(indexname, schema)

# Open a writer for the index
with ix.writer() as writer:
  # Open the CSV file
  """fi = codecs.open('q.csv', 'rb','utf8') 
  data = fi.read() 
  fi.close() 
  f= codecs.open('mynew.csv', 'wb','utf-8') 
  f.write(data.replace('\x00', '')) 
  f.close() 
  with codecs.open("mynew.csv", "rb","utf8") as csvfile:
    # Create a csv reader object for the file
    csvreader = csv.reader(csvfile)"""
  with codecs.open("q.csv", "r","utf8") as csvfile:
    # Create a csv reader object for the file
    csvreader = csvfile.read()

    # Read each row in the file
    for row in csvreader:

      # Create a dictionary to hold the document values for this row
      doc = {}

      # Read the values for the row enumerated like
      # (0, "name"), (1, "quantity"), etc.
      for colnum, value in enumerate(row):

        # Get the field name from the "columns" list
        fieldname = columns[colnum]

        # Strip any whitespace and convert to unicode
        # NOTE: you need to pass the right encoding here!
        try:
            value = unicode(value.strip(), "utf8")
        except TypeError:
             value=value.strip()
        # Put the value in the dictionary
        doc[fieldname] = value

      # Pass the dictionary to the add_document method
      writer.add_document(**doc)
and i got this error:
raceback (most recent call last):
  File "D:/Python27/rr.py", line 62, in <module>
    writer.add_document(**doc)
  File "D:/Python27\whoosh\filedb\filewriting.py", line 369, in add_document
    items = field.index(value)
  File "D:/Python27\whoosh\fields.py", line 466, in index
    return [(txt, 1, 1.0, '') for txt in self._tiers(num)]
  File "D:/Python27\whoosh\fields.py", line 454, in _tiers
    yield self.to_text(num, shift=shift)
  File "D:/Python27\whoosh\fields.py", line 487, in to_text
    return self._to_text(self.prepare_number(x), shift=shift,
  File "D:/Python27\whoosh\fields.py", line 476, in prepare_number
    x = self.type(x)
UnicodeEncodeError: 'decimal' codec can't encode character u'\ufeff' in position 0: invalid decimal Unicode string

my file is here: http://www.mediafire.com/view/?wy3asap4ba7dknl