Merge pull request #3497 from steffengraber/cython-fix

Fix issue with latest Cython release

Author: terhorstd

pynest/pynestkernel.pyx

@@ -361,7 +361,7 @@ cdef inline Datum* python_object_to_datum(obj) except NULL:
 
     if isinstance(obj, bool):
         ret = <Datum*> new BoolDatum(obj)
-    elif isinstance(obj, (int, long)):
+    elif isinstance(obj, int):
         ret = <Datum*> new IntegerDatum(obj)
     elif isinstance(obj, float):
         ret = <Datum*> new DoubleDatum(obj)