Pass code check with pylint=2.4.4 (#1012)

examples/bind.py

@@ -34,14 +34,14 @@ and '/var/run'. It also has a temporary private directory mounted
 on '/var/mn'
 """
 
+from functools import partial
+
 from mininet.net import Mininet
 from mininet.node import Host
 from mininet.cli import CLI
 from mininet.topo import SingleSwitchTopo
 from mininet.log import setLogLevel, info
 
-from functools import partial
-
 
 # Sample usage
 
@@ -61,6 +61,7 @@ def testHostWithPrivateDirs():
     CLI( net )
     net.stop()
 
+
 if __name__ == '__main__':
     setLogLevel( 'info' )
     testHostWithPrivateDirs()