use isinstance in Flatten.apply

apache · Oct 12, 2023 · 32ee6e1 · 32ee6e1
1 parent dea3e11
commit 32ee6e1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/sdks/python/apache_beam/runners/dask/transform_evaluator.py b/sdks/python/apache_beam/runners/dask/transform_evaluator.py
@@ -211,7 +211,7 @@ def value(item):
 class Flatten(DaskBagOp):
   """Produces a flattened bag from a collection of bags."""
   def apply(self, input_bag: t.List[db.Bag]) -> db.Bag:
-    assert type(input_bag) is list, 'Must take a sequence of bags!'
+    assert isinstance(input_bag, list), 'Must take a sequence of bags!'
     return db.concat(input_bag)