diff --git a/aore/__init__.py b/aore/__init__.py
index 2a488d7..eeecfb6 100644
--- a/aore/__init__.py
+++ b/aore/__init__.py
@@ -2,6 +2,6 @@ import os
 import sys
 
 reload(sys)
-cwd = os.getcwd()
-sys.path.append(cwd)
+cwd_dir = os.getcwd()
+sys.path.append(cwd_dir)
 sys.setdefaultencoding("utf-8")
diff --git a/aore/dbutils/dbimpl.py b/aore/dbutils/dbimpl.py
index 3b6ed03..a977d0e 100644
--- a/aore/dbutils/dbimpl.py
+++ b/aore/dbutils/dbimpl.py
@@ -31,6 +31,7 @@ class DBImpl:
             cur = self.get_cursor()
             cur.execute(sql_query)
             cur.close()
+            del cur
             self.transaction_commit()
         except:
             self.transaction_rollback()
@@ -47,6 +48,7 @@ class DBImpl:
 
             rows = cur.fetchall()
             cur.close()
+            del cur
             self.transaction_commit()
         except:
             self.transaction_rollback()
diff --git a/aore/fias/fiasfactory.py b/aore/fias/fiasfactory.py
index cc22055..1e14987 100644
--- a/aore/fias/fiasfactory.py
+++ b/aore/fias/fiasfactory.py
@@ -1,12 +1,13 @@
 # -*- coding: utf-8 -*-
+import re
+from uuid import UUID
+
 import psycopg2
 from bottle import template
-import sys
+
+from aore.config import db_conf
 from aore.dbutils.dbimpl import DBImpl
 from aore.fias.search import SphinxSearch
-from aore.config import db_conf
-from uuid import UUID
-import re
 
 
 class FiasFactory:
@@ -30,18 +31,20 @@ class FiasFactory:
     # rule - "boolean", "uuid", "text"
     def __check_param(self, param, rule):
         if rule == "boolean":
-            assert type(param) is bool, "Invalid parameter type"
+            assert isinstance(param, bool), "Invalid parameter type"
         if rule == "uuid":
-            assert (type(param) is str or type(param) is unicode) and self.__check_uuid(param), "Invalid parameter value"
-        if rule == "text":
-            assert type(param) is str or type(param) is unicode, "Invalid parameter type"
+            assert (isinstance(param, str) or isinstance(param, unicode)) and self.__check_uuid(
+                param), "Invalid parameter value"
+            if rule == "text":
+                assert isinstance(param, str) or isinstance(param, unicode), "Invalid parameter type"
             assert len(param) > 3, "Text too short"
-            pattern = re.compile("[A-za-zА-Яа-я \-,.#№]+")
+            pattern = re.compile(r"[A-za-zА-Яа-я \-,.#№]+")
             assert pattern.match(param), "Invalid parameter value"
 
-    # text - строка поиска
-    # strong - строгий поиск (True) или "мягкий" (False) (с допущением ошибок, опечаток)
-    # Строгий используется при импорте из внешних систем (автоматически), где ошибка критична
+            # text - строка поиска
+            # strong - строгий поиск (True) или "мягкий" (False) (с допущением ошибок, опечаток)
+            # Строгий используется при импорте из внешних систем (автоматически), где ошибка критична
+
     def find(self, text, strong=False):
         try:
             self.__check_param(text, "text")
diff --git a/aore/fias/search.py b/aore/fias/search.py
index 9e89761..1b61a54 100644
--- a/aore/fias/search.py
+++ b/aore/fias/search.py
@@ -74,15 +74,12 @@ class SphinxSearch:
                     maxleven = jaro_rating - jaro_rating * self.regression_coef
                 if jaro_rating >= rating_limit and jaro_rating >= maxleven:
                     outlist.append([match['attrs']['word'], jaro_rating])
+                del jaro_rating
 
         outlist.sort(key=lambda x: x[1], reverse=True)
 
         return outlist
 
-    def __split_phrase(self, phrase):
-        phrase = unicode(phrase).replace('-', '').replace('@', '').lower()
-        return re.split(r"[ ,:.#$]+", phrase)
-
     def __add_word_variations(self, word_entry, strong):
         if word_entry.MT_MANY_SUGG and not strong:
             suggs = self.__get_suggest(word_entry.word, self.rating_limit_soft, self.rating_limit_soft_count)
@@ -111,7 +108,11 @@ class SphinxSearch:
         return we_list
 
     def find(self, text, strong):
-        words = self.__split_phrase(text)
+        def split_phrase(phrase):
+            phrase = unicode(phrase).replace('-', '').replace('@', '').lower()
+            return re.split(r"[ ,:.#$]+", phrase)
+
+        words = split_phrase(text)
         word_entries = self.__get_word_entries(words, strong)
         word_count = len(word_entries)
         for x in range(word_count, max(0, word_count - 3), -1):
diff --git a/aore/manage.py b/aore/manage.py
index 820aceb..41044b3 100644
--- a/aore/manage.py
+++ b/aore/manage.py
@@ -1,9 +1,7 @@
 # -*- coding: utf-8 -*-
-import json
 import logging
 import optparse
 
-from aore.fias.fiasfactory import FiasFactory
 from aore.miscutils.sphinx import SphinxHelper
 from aore.updater.soapreceiver import SoapReceiver
 from aore.updater.updater import Updater
@@ -117,5 +115,6 @@ def main():
         sphinxh = SphinxHelper()
         sphinxh.configure_indexer(options.indexer_path, options.output_conf)
 
+
 if __name__ == '__main__':
     main()
diff --git a/aore/miscutils/sphinx.py b/aore/miscutils/sphinx.py
index 7943919..5fc3b7f 100644
--- a/aore/miscutils/sphinx.py
+++ b/aore/miscutils/sphinx.py
@@ -6,9 +6,9 @@ import os
 from bottle import template
 
 from aore.config import folders, db_conf, sphinx_conf
+from aore.miscutils.trigram import trigram
 from aore.updater.aoxmltableentry import AoXmlTableEntry
 from aore.updater.dbhandler import DbHandler
-from trigram import trigram
 
 
 class SphinxHelper:
@@ -37,22 +37,22 @@ class SphinxHelper:
 
         # Indexing both configs
         run_index_cmd = "{} -c {} --all --rotate".format(self.index_binary, out_fname)
-        logging.info("Indexing main ({})...".format(out_fname))
+        logging.info("Indexing main (%s)...", out_fname)
         os.system(run_index_cmd)
-        logging.info("All indexes were created.".format(out_fname))
+        logging.info("All indexes were created.")
 
         # remove temp files
         for fname, fpath in self.files.iteritems():
             try:
                 os.remove(fpath)
             except:
-                logging.warning("Cannot delete {}. Not accessible.".format(fpath))
+                logging.warning("Cannot delete %s. Not accessible.", fpath)
         logging.info("Temporary files removed.")
         logging.info("Successfully configured. Please restart searchd.")
 
     def __create_sugg_index_config(self):
         fname = os.path.abspath(folders.temp + "/suggest.conf")
-        logging.info("Creating config {}".format(fname))
+        logging.info("Creating config %s", fname)
 
         conf_data = template('aore/templates/sphinx/idx_suggest.conf', db_host=db_conf.host,
                              db_user=db_conf.user,
@@ -70,7 +70,7 @@ class SphinxHelper:
         return fname
 
     def __dbexport_sugg_dict(self):
-        logging.info("Place suggestion dict to DB {}...".format(self.files['dict.txt']))
+        logging.info("Place suggestion dict to DB %s...", self.files['dict.txt'])
         dict_dat_fname = os.path.abspath(folders.temp + "/suggdict.csv")
 
         csv_counter = 0
@@ -104,7 +104,7 @@ class SphinxHelper:
 
     def __create_ao_index_config(self):
         fname = os.path.abspath(folders.temp + "/addrobj.conf")
-        logging.info("Creating config {}".format(fname))
+        logging.info("Creating config %s", fname)
 
         conf_data = template('aore/templates/sphinx/idx_addrobj.conf', db_host=db_conf.host,
                              db_user=db_conf.user,
@@ -124,7 +124,7 @@ class SphinxHelper:
 
     def __create_suggestion_dict(self):
         fname = os.path.abspath(folders.temp + "/suggdict.txt")
-        logging.info("Make suggestion dict ({})...".format(fname))
+        logging.info("Make suggestion dict (%s)...", fname)
 
         run_builddict_cmd = "{} {} -c {} --buildstops {} 200000 --buildfreqs".format(self.index_binary,
                                                                                      sphinx_conf.index_addjobj,
@@ -136,7 +136,7 @@ class SphinxHelper:
 
     def __create_main_config(self, config_fname):
         out_filename = os.path.abspath(config_fname)
-        logging.info("Creating main config {}...".format(out_filename))
+        logging.info("Creating main config %s...", out_filename)
 
         conf_data = template('aore/templates/sphinx/sphinx.conf', sphinx_var_path=sphinx_conf.var_dir)
 
diff --git a/aore/phias.py b/aore/phias.py
index 5eea907..5adf1e9 100644
--- a/aore/phias.py
+++ b/aore/phias.py
@@ -33,6 +33,6 @@ def find(text, strong=False):
 
 
 @app.error(404)
-def error404(error):
+def error404():
     response.content_type = 'application/json'
     return json.dumps(dict(error="Page not found"))
diff --git a/aore/updater/aodataparser.py b/aore/updater/aodataparser.py
index 046aa0d..5fe773e 100644
--- a/aore/updater/aodataparser.py
+++ b/aore/updater/aodataparser.py
@@ -4,7 +4,7 @@ import os
 from aore.config import folders
 from aore.dbutils.dbschemas import db_shemas
 from aore.miscutils.exceptions import FiasException
-from xmlparser import XMLParser
+from aore.updater.xmlparser import XMLParser
 
 
 class AoDataParser:
diff --git a/aore/updater/aorar.py b/aore/updater/aorar.py
index a8c3fb7..ba95561 100644
--- a/aore/updater/aorar.py
+++ b/aore/updater/aorar.py
@@ -17,7 +17,7 @@ class AoRar:
         rarfile.UNRAR_TOOL = unrar_config.path
 
     def download(self, url):
-        logging.info("Downloading {}".format(url))
+        logging.info("Downloading %s", url)
         try:
             local_filename = os.path.abspath(folders.temp + "/" + url.split('/')[-1])
             if os.path.isfile(local_filename):
@@ -32,7 +32,7 @@ class AoRar:
         except:
             raise FiasException("Error downloading. Reason : {}".format(format_exc()))
 
-        logging.info("Downloaded {} bytes".format(request.headers['Content-length']))
+        logging.info("Downloaded %d bytes", request.headers['Content-length'])
         return local_filename
 
     def get_table_entries(self, file_name, allowed_tables):
diff --git a/aore/updater/dbhandler.py b/aore/updater/dbhandler.py
index 5f46e71..5e99337 100644
--- a/aore/updater/dbhandler.py
+++ b/aore/updater/dbhandler.py
@@ -44,7 +44,7 @@ class DbHandler:
         assert sql_query, "Invalid operation type: {}".format(operation_type)
 
         self.db.execute(sql_query)
-        logging.info("Processed {} queries FROM {}".format(processed_count - 1, csv_file_name))
+        logging.info("Processed %d queries FROM %s", processed_count - 1, csv_file_name)
 
     def create_structure(self):
         logging.info("Prepare to create DB structure...")
diff --git a/aore/updater/updater.py b/aore/updater/updater.py
index 26d8afe..35bc40e 100644
--- a/aore/updater/updater.py
+++ b/aore/updater/updater.py
@@ -3,6 +3,8 @@
 import logging
 from os import walk, path
 
+import psycopg2
+
 from aore.config import db_conf
 from aore.dbutils.dbimpl import DBImpl
 from aore.dbutils.dbschemas import allowed_tables, db_shemas
@@ -10,7 +12,6 @@ from aore.updater.aodataparser import AoDataParser
 from aore.updater.aorar import AoRar
 from aore.updater.aoxmltableentry import AoXmlTableEntry
 from aore.updater.dbhandler import DbHandler
-import psycopg2
 
 
 class Updater:
@@ -42,15 +43,14 @@ class Updater:
             db.close()
 
     @classmethod
-    def __set__update_version(cls, updver = 0):
+    def __set__update_version(cls, updver=0):
         db = DBImpl(psycopg2, db_conf)
         try:
-            assert type(updver) is int, "Update version must be of int type."
+            assert isinstance(updver, int), "Update version must be of int type."
             db.execute('UPDATE "CONFIG" SET version={} WHERE id=0'.format(updver))
         finally:
             db.close()
 
-
     def __get_updates_from_folder(self, foldername):
         # TODO: Вычислять версию, если берем данные из каталога
         yield dict(intver=0, textver="Unknown", delta_url=foldername, complete_url=foldername)
@@ -80,7 +80,7 @@ class Updater:
         self.db_handler.create_structure()
 
         for update_entry in self.updalist_generator:
-            logging.info("Processing DB #{}".format(update_entry['intver']))
+            logging.info("Processing DB #%d", update_entry['intver'])
             for table_entry in self.tablelist_generator(update_entry['complete_url']):
                 if table_entry.operation_type == AoXmlTableEntry.OperationType.update:
                     table_entry.operation_type = AoXmlTableEntry.OperationType.create
@@ -103,7 +103,7 @@ class Updater:
             if not indexes_dropped:
                 self.db_handler.drop_indexes(allowed_tables)
                 indexes_dropped = True
-            logging.info("Processing update #{}".format(update_entry['intver']))
+            logging.info("Processing update #%d", update_entry['intver'])
             for table_entry in self.tablelist_generator(update_entry['delta_url']):
                 self.process_single_entry(table_entry.operation_type, table_entry)
             Updater.__set__update_version(update_entry['intver'])