Improve Python 2 compatability with "future" print_function.

Use python3 version of the print function when running
under python2. Also added "from __future__ import division"
to a few more module files.

Source/atom.py

@@ -1,3 +1,7 @@
+
+from __future__ import division
+from __future__ import print_function
+
 import string, Source.lib, Source.group
 
 

Source/bonds.py

@@ -1,4 +1,7 @@
+
 from __future__ import division
+from __future__ import print_function
+
 import pickle,sys,os,math,Source.calculations
 
 

Source/calculations.py

@@ -1,5 +1,7 @@
 
 from __future__ import division
+from __future__ import print_function
+
 import math, Source.protonate, Source.bonds,copy, sys
 
 

Source/conformation_container.py

@@ -3,6 +3,8 @@
 #
 
 from __future__ import division
+from __future__ import print_function
+
 import Source.group, Source.determinants, Source.determinant, Source.ligand, Source.output, Source.coupled_groups, functools
 
 class Conformation_container:

Source/coupled_groups.py

@@ -1,5 +1,7 @@
 
 from __future__ import division
+from __future__ import print_function
+
 import math, Source.output, Source.group, Source.lib, itertools
 
 

Source/determinant.py

@@ -1,4 +1,7 @@
 
+from __future__ import division
+from __future__ import print_function
+
 class Determinant:
     """
         Determinant class - set up for later structurization

Source/determinants.py

@@ -1,3 +1,7 @@
+
+from __future__ import division
+from __future__ import print_function
+
 import math, time
 
 import Source.iterative, Source.lib, Source.vector_algebra

Source/group.py

@@ -3,6 +3,8 @@
 #
 
 from __future__ import division
+from __future__ import print_function
+
 import Source.ligand, Source.determinant, Source.ligand_pka_values, math, Source.protonate
 
 my_protonator = Source.protonate.Protonate(verbose=False)

Source/iterative.py

@@ -1,3 +1,7 @@
+
+from __future__ import division
+from __future__ import print_function
+
 import math, time
 import Source.lib as lib
 from Source.determinant import Determinant

Source/lib.py

@@ -1,5 +1,8 @@
 #!/usr/bin/python
 
+from __future__ import division
+from __future__ import print_function
+
 import string, sys, copy, math, os
 
 

Source/ligand.py

@@ -1,5 +1,8 @@
 #!/usr/bin/python
 
+from __future__ import division
+from __future__ import print_function
+
 import sys, Source.calculations
 from Source.vector_algebra import *
 

Source/ligand_pka_values.py

@@ -1,5 +1,8 @@
 #!/usr/bin/env python
 
+from __future__ import division
+from __future__ import print_function
+
 import Source.molecular_container, Source.calculations, Source.calculations, Source.parameters, Source.pdb, Source.lib, os, subprocess, sys
 
 class ligand_pka_values:

Source/molecular_container.py

@@ -4,6 +4,7 @@
 #
 #
 from __future__ import division
+from __future__ import print_function
 import os, Source.pdb, sys, Source.version, Source.output, Source.conformation_container, Source.group, Source.lib
 
 class Molecular_container:

Source/output.py

@@ -1,3 +1,7 @@
+
+from __future__ import division
+from __future__ import print_function
+
 import sys
 import Source.lib
 

Source/parameters.py

@@ -1,3 +1,7 @@
+
+from __future__ import division
+from __future__ import print_function
+
 import math
 import Source.lib as lib
 import sys, os

Source/pdb.py

@@ -1,3 +1,7 @@
+
+from __future__ import division
+from __future__ import print_function
+
 import string, sys, copy, Source.lib
 from Source.atom import Atom
 from Source.conformation_container import Conformation_container

Source/protonate.py

@@ -1,6 +1,7 @@
 #!/usr/bin/python
 
 from __future__ import division
+from __future__ import print_function
 from Source.vector_algebra import *
 import Source.bonds, Source.pdb, Source.atom
 

Source/vector_algebra.py

@@ -1,3 +1,5 @@
+from __future__ import division
+from __future__ import print_function
 import math
 
 class vector:

Source/version.py

@@ -1,3 +1,5 @@
+from __future__ import division
+from __future__ import print_function
 import math
 import Source.lib as lib
 import sys, os

Tests/runtest.py

@@ -2,6 +2,9 @@
 
 """ Run test for test pdbs """
 
+from __future__ import division
+from __future__ import print_function
+
 from subprocess import call
 import os, re
 import sys