Use python3 print

One step closer to no more python2

Change-Id: I4dcfd7aef6e8bb3f9a04be7bc91c11749e2104f3
diff --git a/y2016/control_loops/python/drivetrain.py b/y2016/control_loops/python/drivetrain.py
index 7417ffb..ed108ea 100755
--- a/y2016/control_loops/python/drivetrain.py
+++ b/y2016/control_loops/python/drivetrain.py
@@ -1,5 +1,6 @@
 #!/usr/bin/python
 
+from __future__ import print_function
 from frc971.control_loops.python import drivetrain
 import sys
 
@@ -31,7 +32,7 @@
   if FLAGS.plot:
     drivetrain.PlotDrivetrainMotions(kDrivetrain)
   elif len(argv) != 5:
-    print "Expected .h file name and .cc file name"
+    print("Expected .h file name and .cc file name")
   else:
     # Write the generated constants out to a file.
     drivetrain.WriteDrivetrain(argv[1:3], argv[3:5], 'y2016', kDrivetrain)