py3: ported Part to python3

src/Mod/Part/App/GeometryCurvePyImp.cpp

@@ -145,10 +145,17 @@ PyObject* GeometryCurvePy::discretize(PyObject *args, PyObject *kwds)
         // use no kwds
         PyObject* dist_or_num;
         if (PyArg_ParseTuple(args, "O", &dist_or_num)) {
+#if PY_MAJOR_VERSION >= 3
+            if (PyLong_Check(dist_or_num)) {
+                numPoints = PyLong_AsLong(dist_or_num);
+                uniformAbscissaPoints = true;
+            }
+#else
             if (PyInt_Check(dist_or_num)) {
                 numPoints = PyInt_AsLong(dist_or_num);
                 uniformAbscissaPoints = true;
             }
+#endif
             else if (PyFloat_Check(dist_or_num)) {
                 distance = PyFloat_AsDouble(dist_or_num);
                 uniformAbscissaDistance = true;