Index: wflow-py/UnitTests/TestBMI_combined_mp.py
===================================================================
diff -u -r3d36073f779f6d9a5a34f6304d8e901b65061154 -r836f5c634f2a0b397223c5fefd89df77e223b0e4
--- wflow-py/UnitTests/TestBMI_combined_mp.py	(.../TestBMI_combined_mp.py)	(revision 3d36073f779f6d9a5a34f6304d8e901b65061154)
+++ wflow-py/UnitTests/TestBMI_combined_mp.py	(.../TestBMI_combined_mp.py)	(revision 836f5c634f2a0b397223c5fefd89df77e223b0e4)
@@ -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()