Reinstate Python 2 compatibility.

examples/loadsave.py

@@ -5,6 +5,8 @@ Usage:
     loadsave.py <in.segy> <out.segy>
 
 """
+from __future__ import print_function
+
 import os
 
 import sys

examples/timed_reader.py

@@ -6,6 +6,7 @@ Usage:
 
 """
 from __future__ import print_function
+
 import datetime
 
 import os