Fix list of ranges

AttributeError: 'list' object has no attribute 'is_empty'
sdispater · Dec 20, 2019 · f34bb15 · f34bb15
1 parent f9524f9
commit f34bb15
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/mixology/union.py b/mixology/union.py
@@ -20,6 +20,9 @@ def ranges(self):
     def of(cls, *ranges):
         flattened = []
         for constraint in ranges:
+            if isinstance(constraint, list):
+                flattened.extend(constraint)
+
             if constraint.is_empty():
                 continue