passing tests

rowers/utils.py

@@ -440,17 +440,19 @@ def wavg(group, avg_name, weight_name):
     """
     try:
         d = group[avg_name]
-    except KeyError:
+    except (KeyError, ColumnNotFoundError):
         return 0
     try:
         w = group[weight_name]
-    except KeyError:
+    except (KeyError, ColumnNotFoundError):
         return d.mean()
     try:
         return (d * w).sum() / w.sum()
     except ZeroDivisionError:  # pragma: no cover
         return d.mean()
 
+    return 0
+
 from string import Formatter
 
 def totaltime_sec_to_string(totaltime, shorten=False):