3 files changed, 5 insertions, 0 deletions
diff --git a/vk/tracking/db/backend/csv.py b/vk/tracking/db/backend/csv.py
index 4943ff2..43038e4 100644
--- a/vk/tracking/db/backend/csv.py
+++ b/vk/tracking/db/backend/csv.py
@@ -8,6 +8,7 @@ from ..io import FileReaderCSV, FileWriterCSV
 from ..record import Record
 from ..timestamp import Timestamp
 
+
 class Writer(meta.Writer):
     def __init__(self, fd):
         self._writer = FileWriterCSV(fd)
@@ -30,6 +31,7 @@ class Writer(meta.Writer):
     def _record_to_row(record):
         return [str(record.get_timestamp())] + [str(record[field]) for field in record]
 
+
 class Reader(meta.Reader):
     def __init__(self, fd):
         self._reader = FileReaderCSV(fd)
diff --git a/vk/tracking/db/backend/log.py b/vk/tracking/db/backend/log.py
index 814cabc..d301856 100644
--- a/vk/tracking/db/backend/log.py
+++ b/vk/tracking/db/backend/log.py
@@ -7,6 +7,7 @@ import logging
 
 from .. import meta
 
+
 class Writer(meta.Writer):
     def __init__(self, fd):
         self._logger = logging.getLogger(__file__)
diff --git a/vk/tracking/db/backend/null.py b/vk/tracking/db/backend/null.py
index 663af10..80a66b4 100644
--- a/vk/tracking/db/backend/null.py
+++ b/vk/tracking/db/backend/null.py
@@ -5,6 +5,7 @@
 
 from .. import meta
 
+
 class Writer(meta.Writer):
     def __init__(self):
         pass
@@ -18,6 +19,7 @@ class Writer(meta.Writer):
     def on_connection_error(self, e):
         pass
 
+
 class Reader(meta.Reader):
     def __init__(self):
         pass