diff --git a/zipline/core/devsimulator.py b/zipline/core/devsimulator.py
index cbce4b66..6bc76815 100644
--- a/zipline/core/devsimulator.py
+++ b/zipline/core/devsimulator.py
@@ -14,6 +14,7 @@ THE DEVSIMULATOR IS DEPRECATED, IT WILL NOT BEHAVE LIKE ANY OTHER
 SYSTEM USED IN TESTS OR IN PRODUCTION
 """
 
+
 class AddressAllocator(object):
     """
     Produces a iterator of 10000 sockets to allocate as needed.
@@ -28,9 +29,10 @@ class AddressAllocator(object):
         ]
 
     def lease(self, n):
-        sockets = self.sockets[self.idx:self.idx+n]
+        sockets = self.sockets[self.idx: self.idx + n]
         self.idx += n
         return sockets
 
     def reaquire(self, *conn):
-        pass
\ No newline at end of file
+        pass
+