fixed defaults not getting used if file missing

ActivitySim · Aug 14, 2022 · 69008a9 · 69008a9
1 parent 3263d4a
commit 69008a9
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/activitysim/abm/models/util/canonical_ids.py b/activitysim/abm/models/util/canonical_ids.py
@@ -196,7 +196,7 @@ def determine_flavors_from_alts_file(
         }
         valid_flavors = all(
             [(isinstance(flavor, str) & (num >= 0)) for flavor, num in flavors.items()]
-        )
+        ) & (len(flavors) > 0)
     except (ValueError, AttributeError):
         valid_flavors = False