3 files changed, 10 insertions, 8 deletions
diff --git a/vk/tracking/db/backend/__init__.py b/vk/tracking/db/backend/__init__.py
index 4b3c278..68de924 100644
--- a/vk/tracking/db/backend/__init__.py
+++ b/vk/tracking/db/backend/__init__.py
@@ -2,4 +2,6 @@
 # This file is licensed under the terms of the MIT License.
 # See LICENSE.txt for details.
 
-__all__ = 'csv', 'log', 'null'
+from . import csv, log, null
+
+__all__ = 'csv', 'log', 'null',
diff --git a/vk/tracking/db/backend/log.py b/vk/tracking/db/backend/log.py
index 625257b..03548eb 100644
--- a/vk/tracking/db/backend/log.py
+++ b/vk/tracking/db/backend/log.py
@@ -64,7 +64,7 @@ class Writer:
         return '{} was last seen at {} using {}.'.format(
             Writer._format_user(user),
             user.get_last_seen_time_local(),
-            user.get_last_seen_platform().get_description_for_sentence())
+            user.get_last_seen_platform().get_descr_text())
 
     @staticmethod
     def _format_user_went_online(user):
diff --git a/vk/tracking/db/format.py b/vk/tracking/db/format.py
index 4856094..862c20e 100644
--- a/vk/tracking/db/format.py
+++ b/vk/tracking/db/format.py
@@ -4,7 +4,7 @@
 
 from enum import Enum
 
-from .backend import *
+from . import backend
 
 class Format(Enum):
     CSV = 'csv'
@@ -13,21 +13,21 @@ class Format(Enum):
 
     def create_writer(self, fd):
         if self is Format.CSV:
-            return csv.Writer(fd)
+            return backend.csv.Writer(fd)
         elif self is Format.LOG:
-            return log.Writer(fd)
+            return backend.log.Writer(fd)
         elif self is Format.NULL:
-            return null.Writer(fd)
+            return backend.null.Writer(fd)
         else:
             raise NotImplementedError('unsupported database format: ' + str(self))
 
     def create_reader(self, fd):
         if self is Format.CSV:
-            return csv.Reader(fd)
+            return backend.csv.Reader(fd)
         elif self is Format.LOG:
             raise NotImplementedError()
         elif self is Format.NULL:
-            return null.Reader(fd)
+            return backend.null.Reader(fd)
         else:
             raise NotImplementedError('unsupported database format: ' + str(self))