fix the simdivfilters problem with python3. This has now been tested on py3 and should, hopefully, not cause the travis build to fail

Code/SimDivPickers/Wrap/testPickers.py

@@ -27,7 +27,7 @@ class TestCase(unittest.TestCase):
         return 0.0
       if i<j:
         j,i=i,j
-      return self.dMat[i*(i-1)/2+j]
+      return self.dMat[i*(i-1)//2+j]
     lmaxmin = pkr.LazyPick(func, self.n, self.m,(886,112))
     self.assertEqual(list(lmaxmin),list(maxmin))
 

rdkit/SimDivFilters/__init__.py

@@ -4,7 +4,8 @@
 #
 from rdkit import rdBase
 try:
-  import rdSimDivPickers
+  from rdkit.SimDivFilters import rdSimDivPickers
   from rdkit.SimDivFilters.rdSimDivPickers import *
 except ImportError:
+  import traceback
   rdSimDivPickers=None