diff --git a/src/knownnodes.py b/src/knownnodes.py
index aa080128..71b74771 100644
--- a/src/knownnodes.py
+++ b/src/knownnodes.py
@@ -1,9 +1,9 @@
-import pickle
 import os
+import pickle
 import threading
 
-from bmconfigparser import BMConfigParser
 import state
+from bmconfigparser import BMConfigParser
 
 knownNodesLock = threading.Lock()
 knownNodes = {}
@@ -13,37 +13,51 @@ knownNodesTrimAmount = 2000
 # forget a node after rating is this low
 knownNodesForgetRating = -0.5
 
-def saveKnownNodes(dirName = None):
+
+def saveKnownNodes(dirName=None):
     if dirName is None:
         dirName = state.appdata
     with knownNodesLock:
         with open(os.path.join(dirName, 'knownnodes.dat'), 'wb') as output:
             pickle.dump(knownNodes, output)
 
+
 def increaseRating(peer):
     increaseAmount = 0.1
     maxRating = 1
     with knownNodesLock:
         for stream in knownNodes.keys():
             try:
-                knownNodes[stream][peer]["rating"] = min(knownNodes[stream][peer]["rating"] + increaseAmount, maxRating)
+                knownNodes[stream][peer]["rating"] = min(
+                    knownNodes[stream][peer]["rating"] + increaseAmount,
+                    maxRating
+                )
             except KeyError:
                 pass
 
+
 def decreaseRating(peer):
     decreaseAmount = 0.1
     minRating = -1
     with knownNodesLock:
         for stream in knownNodes.keys():
             try:
-                knownNodes[stream][peer]["rating"] = max(knownNodes[stream][peer]["rating"] - decreaseAmount, minRating)
+                knownNodes[stream][peer]["rating"] = max(
+                    knownNodes[stream][peer]["rating"] - decreaseAmount,
+                    minRating
+                )
             except KeyError:
                 pass
 
-def trimKnownNodes(recAddrStream = 1):
-    if len(knownNodes[recAddrStream]) < int(BMConfigParser().get("knownnodes", "maxnodes")):
+
+def trimKnownNodes(recAddrStream=1):
+    if len(knownNodes[recAddrStream]) < \
+            BMConfigParser().safeGetInt("knownnodes", "maxnodes"):
         return
     with knownNodesLock:
-        oldestList = sorted(knownNodes[recAddrStream], key=lambda x: x['lastseen'])[:knownNodesTrimAmount]
+        oldestList = sorted(
+            knownNodes[recAddrStream],
+            key=lambda x: x['lastseen']
+        )[:knownNodesTrimAmount]
         for oldest in oldestList:
             del knownNodes[recAddrStream][oldest]