diff --git a/modeling/data/angle.py b/modeling/data/angle.py
index 51b65ad..7e95ba3 100755
--- a/modeling/data/angle.py
+++ b/modeling/data/angle.py
@@ -22,6 +22,8 @@
 and they are therefore not supported (but may work anyway).
 """
 
+from __future__ import print_function
+
 __author__ = "Kristian Rother"
 __copyright__ = "Copyright 2007-2009 2008, The Cogent Project"
 __contributors__ = ["Kristian Rother", "Sandra Smit"]
@@ -183,7 +185,7 @@ def print_output(dihe_histo):
 
   
   nn=nn+1
-  print nn,file  
+  print(nn,file)
   if nn%1000==0: print_output(dihe_histo)
   
   logic=False
diff --git a/modeling/data/dihedral.py b/modeling/data/dihedral.py
index e3ee458..f77bfec 100755
--- a/modeling/data/dihedral.py
+++ b/modeling/data/dihedral.py
@@ -22,6 +22,8 @@
 and they are therefore not supported (but may work anyway).
 """
 
+from __future__ import print_function
+
 __author__ = "Kristian Rother"
 __copyright__ = "Copyright 2007-2009 2008, The Cogent Project"
 __contributors__ = ["Kristian Rother", "Sandra Smit"]
@@ -174,7 +176,7 @@ def print_output(dihe_histo):
 
   
   nn=nn+1
-  print nn,file  
+  print(nn,file)
   if nn%1000==0: print_output(dihe_histo)
   
   logic=False