Use print function

examples/cpu.py

@@ -4,6 +4,8 @@
 cpu.py: test iperf bandwidth for varying cpu limits
 """
 
+from __future__ import print_function
+
 from mininet.net import Mininet
 from mininet.node import CPULimitedHost
 from mininet.topolib import TreeTopo
@@ -20,7 +22,7 @@ def bwtest( cpuLimits, period_us=100000, seconds=5 ):
     results = {}
 
     for sched in 'rt', 'cfs':
-        print '*** Testing with', sched, 'bandwidth limiting'
+        print( '*** Testing with', sched, 'bandwidth limiting' )
         for cpu in cpuLimits:
             host = custom( CPULimitedHost, sched=sched,
                            period_us=period_us,
@@ -54,16 +56,16 @@ def dump( results ):
 
     fmt = '%s\t%s\t%s'
 
-    print
-    print fmt % ( 'sched', 'cpu', 'client MB/s' )
-    print
+    print()
+    print( fmt % ( 'sched', 'cpu', 'client MB/s' ) )
+    print()
 
     for sched in sorted( results.keys() ):
         entries = results[ sched ]
         for cpu, bps in entries:
             pct = '%.2f%%' % ( cpu * 100 )
             mbps = bps / 1e6
-            print fmt % ( sched, pct, mbps )
+            print( fmt % ( sched, pct, mbps ) )
 
 
 if __name__ == '__main__':