Merge branch 'population' of gitlab.eps.surrey.ac.uk:ri0005/binary_c-python into population

binarycpython/utils/grid.py

@@ -618,12 +618,16 @@ class Population(object):
         print("with mp: {} systems took {}s".format(amt, stop_mp - start_mp))
 
         #########################################################
+        duration_no_mp = start_no_mp - stop_no_mp
+        duration_mp = start_mp - stop_mp
+        ratio = duration_no_mp/duration_mp
         print(
             "Running mp versus no mp is {} times faster!".format(
-                (start_no_mp - stop_no_mp) / (start_mp - stop_mp)
+                ratio
             )
         )
-        return (nodes, amt, stop_no_mp - start_no_mp, stop_mp - start_mp)
+
+        return (nodes, amt, duration_no_mp, duration_mp, ratio)
 
     def evolve_population_mp(self, parse_function, mass_distribution):
         """