pep8 fix

CHANGES.rst

@@ -8,6 +8,7 @@ Here you can see the full list of changes between each SQLAlchemy-Utils release.
 ^^^^^^^^^^^^^^^^^^^
 
 - Removed compat module, added total_ordering package to Python 2.6 requirements
+- Enhanced render_statement function
 
 
 0.17.0 (2013-10-23)

sqlalchemy_utils/types/ip_address.py

@@ -1,14 +1,13 @@
 import six
 
+ip_address = None
 try:
     from ipaddress import ip_address
-
 except ImportError:
     try:
         from ipaddr import IPAddress as ip_address
-
     except ImportError:
-        ip_address = None
+        pass
 
 
 from sqlalchemy import types