From 6b01ddeaa310b375f15bf37c1f5856acdcbdd5cc Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 26 Jun 2018 06:44:40 +0530
Subject: [PATCH] pep8

---
 src/calibre/db/tables.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/db/tables.py b/src/calibre/db/tables.py
index 30cedbeb7b..169b97f52d 100644
--- a/src/calibre/db/tables.py
+++ b/src/calibre/db/tables.py
@@ -42,6 +42,7 @@ def c_parse(val):
     except (ValueError, TypeError):
         return UNDEFINED_DATE
 
+
 ONE_ONE, MANY_ONE, MANY_MANY = xrange(3)
 
 null = object()
@@ -700,4 +701,3 @@ class IdentifiersTable(ManyToManyTable):
 
     def all_identifier_types(self):
         return frozenset(k for k, v in self.col_book_map.iteritems() if v)
-