Index: wflow-py/UnitTests/TestBMI_combined_mp.py
===================================================================
diff -u -rf33154035afcaa101c5a30594b9c86a4fe9f61ef -r59cffa03cc52cdb4dc62a0ead1aafb6bc039b430
--- wflow-py/UnitTests/TestBMI_combined_mp.py	(.../TestBMI_combined_mp.py)	(revision f33154035afcaa101c5a30594b9c86a4fe9f61ef)
+++ wflow-py/UnitTests/TestBMI_combined_mp.py	(.../TestBMI_combined_mp.py)	(revision 59cffa03cc52cdb4dc62a0ead1aafb6bc039b430)
@@ -32,7 +32,7 @@
             bmiobj.get_end_time() - bmiobj.get_start_time()
         ) / bmiobj.get_time_step() + 1
         print(steps)
-        for a in range(0, steps):
+        for a in range(0, int(steps)):
             bmiobj.update()
 
         atn = bmiobj.get_attribute_names()