Edits to pass code check and make style consistent.

mininet/link.py

@@ -290,8 +290,8 @@ class TCIntf( Intf ):
         cmds += bwcmds
 
         # Delay/jitter/loss/max_queue_size using netem
-        delaycmds, parent = self.delayCmds( delay=delay, jitter=jitter, loss=loss,
-                                max_queue_size=max_queue_size,
+        delaycmds, parent = self.delayCmds( delay=delay, jitter=jitter,
+                                loss=loss, max_queue_size=max_queue_size,
                                 parent=parent )
         cmds += delaycmds
 

mininet/topo.py

@@ -14,28 +14,33 @@ setup for testing, and can even be emulated with the Mininet package.
 from mininet.util import irange, natural, naturalSeq
 
 class Graph( object ):
-    "Utility class to track nodes and edges "
+    "Utility class to track nodes and edges - replaces networkx.Graph"
 
     def __init__( self ):
         self.data = {}
 
     def add_node( self, node ):
+        "Add node to graph"
         if node not in self.data.keys():
             self.data[ node ] = []
 
     def add_edge( self, src, dest ):
+        "Add edge to graph"
         self.add_node( src )
         self.add_node( dest )
         self.data[ src ].append( dest )
 
     def nodes( self ):
+        "Return list of graph nodes"
         return self.data.keys()
 
     def edges( self ):
+        "Iterator: return graph edges"
         for src in self.data.keys():
             for dest in self.data[ src ]:
                 yield ( src, dest )
 
+
 class Topo(object):
     "Data center network representation for structured multi-trees."