Pass pylint.

examples/emptynet.py

@@ -1,7 +1,7 @@
 #!/usr/bin/python
 
 """
-This example shows how to create an empty Mininet object 
+This example shows how to create an empty Mininet object
 (without a topology object) and add nodes to it manually.
 """
 
@@ -13,32 +13,32 @@ from mininet.log import setLogLevel, info
 def emptyNet():
 
     "Create an empty network and add nodes to it."
-    
+
     net = Mininet( controller=Controller )
 
     info( '*** Adding controller\n' )
     net.addController( 'c0' )
-    
+
     info( '*** Adding hosts\n' )
     h1 = net.addHost( 'h1', ip='10.0.0.1' )
     h2 = net.addHost( 'h2', ip='10.0.0.2' )
-    
+
     info( '*** Adding switch\n' )
     s3 = net.addSwitch( 's3' )
-    
+
     info( '*** Creating links\n' )
     h1.linkTo( s3 )
     h2.linkTo( s3 )
-    
+
     info( '*** Starting network\n')
     net.start()
-    
+
     info( '*** Running CLI\n' )
     CLI( net )
-    
+
     info( '*** Stopping network' )
     net.stop()
-    
+
 if __name__ == '__main__':
     setLogLevel( 'info' )
     emptyNet()