--- /dev/null
+--- lammps-4Sep15-orig/python/lammps.py 2015-09-02 14:41:38.000000000 -0600
++++ lammps-4Sep15/python/lammps.py 2015-09-08 05:59:16.000000000 -0600
+@@ -33,7 +33,7 @@
+ except:
+ type,value,tb = sys.exc_info()
+ traceback.print_exception(type,value,tb)
+- raise OSError,"Could not load LAMMPS dynamic library from %s" % modpath
++ raise OSError("Could not load LAMMPS dynamic library from %s" % modpath)
+
+ # if no ptr provided, create an instance of LAMMPS
+ # don't know how to pass an MPI communicator from PyPar