diff --git a/ZenPacks/zenoss/PostgreSQL/util.py b/ZenPacks/zenoss/PostgreSQL/util.py
index dbee7ed..dd430f4 100644
--- a/ZenPacks/zenoss/PostgreSQL/util.py
+++ b/ZenPacks/zenoss/PostgreSQL/util.py
@@ -15,6 +15,7 @@
 import sys
 import time
 
+
 def addLocalLibPath():
     """
     Helper to add the ZenPack's lib directory to PYTHONPATH.
@@ -24,17 +25,20 @@ def addLocalLibPath():
 
     site.addsitedir(os.path.join(os.path.dirname(__file__), 'lib'))
 
+
 def datetimeToEpoch(datetime):
     return time.mktime(datetime.timetuple())
 
+
 def datetimeDurationInSeconds(begin, end):
     d = end - begin
 
     # Taken from the implementation of timedelta.total_seconds in Python 2.7.
     # Added microseconds resolution by introducing a float.
     return (
-        d.microseconds + (d.seconds + d.days * 24 * 3600) * 10**6
-    ) / float(10**6)
+        d.microseconds + (d.seconds + d.days * 24 * 3600) * (10 ** 6)
+        ) / float(10 ** 6)
+
 
 class CollectedOrModeledMixin:
     def getFloatForValue(self, value):
@@ -50,7 +54,7 @@ def getFloatForValue(self, value):
     def getIntForValue(self, value):
         r = self.getFloatForValue(value)
         return int(round(r)) if r is not None else None
-        
+
     def getStringForValue(self, value, format='{0}'):
         r = self.getFloatForValue(value)
         if r is None:
@@ -58,6 +62,7 @@ def getStringForValue(self, value, format='{0}'):
 
         return format.format(r)
 
+
 def CollectedOrModeledProperty(propertyName):
     """
     This uses a closure to make using CollectedOrModeledMixin easier to use in
@@ -71,6 +76,7 @@ def getter(self):
 addLocalLibPath()
 from pg8000 import DBAPI
 
+
 class PgHelper(object):
     _host = None
     _port = None
@@ -508,4 +514,3 @@ def getTableStatsForDatabase(self, db):
             cursor.close()
 
         return tableStats
-