Topography: updated dtype for weights

EdCaunt · EdCaunt · commit bb9f449c416a · 2021-02-10T15:07:40.000Z
diff --git a/devitoboundary/topography.py b/devitoboundary/topography.py
@@ -170,7 +170,7 @@ def subs(self, derivs):
 
         grouped = derivs.groupby('name')
 
-        weights = pd.Series([])
+        weights = pd.Series([], dtype=object)
 
         for name, group in grouped:
             # Loop over items in each group and call a function
