Extract data from PostgreSQL

#!/usr/bin/python
# -*- coding: utf-8 -*-

import psycopg2
import sys

try:
    offset = 0
    while offset < 9000000:
        #print "Current OFFSET : " + str(offset)
        con = psycopg2.connect(database='postgres', user='postgres', password='postgres')
        cur = con.cursor()
        sql='SELECT name,content FROM my_db LIMIT 200 OFFSET {0}'.format(offset)
        cur.execute(sql)
        dataset = cur.fetchall()

        for row in dataset:
            nazov=row[0].upper().decode('utf8')
            obsah=row[1].lower().decode('utf8')
            nazov=nazov.encode('utf8').replace("í","Í").replace("š","Š").replace("č","Č").replace("ľ","Ľ") \
                                      .replace("ž","Ž").replace("ý","Ý").replace("é","É").replace("á","Á") \
                                      .replace("ť","Ť").replace("ú","Ú").replace("ň","Ň").replace("ó","Ó") \
                                      .replace("ô","Ô").replace("ä","Ä").replace("ě","Ě").replace("ü","Ü") \
                                      .replace("ö","Ö").replace("ů","Ů").replace("ř","Ř") # Quick&Dirty :) #

            print "\n" + "-----" + "\n" + nazov + "\n"
            print obsah
        offset = offset +200

except psycopg2.DatabaseError, e:
    print 'Error %s' % e
    sys.exit(1)

finally:
    if con:
        con.close()