aaltay commented on a change in pull request #14869:
URL: https://github.com/apache/beam/pull/14869#discussion_r645046746
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File path: sdks/python/apache_beam/transforms/util.py
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@@ -51,6 +51,7 @@
from apache_beam.transforms.core import MapTuple
from apache_beam.transforms.core import ParDo
from apache_beam.transforms.core import Windowing
+from apache_beam.transforms.core import _fn_takes_side_inputs
Review comment:
Perhaps we should move `_fn_takes_side_inputs` to util.py now it is used
in multiple places and rename it to `fn_takes_side_inputs`?
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File path: sdks/python/apache_beam/transforms/util_test.py
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@@ -628,6 +628,17 @@ def test_callable_k(self):
with_keys = pc | util.WithKeys(lambda x: x * x)
assert_that(with_keys, equal_to([(1, 1), (4, 2), (9, 3)]))
+ @staticmethod
+ def _test_args_kwargs_fn(x, multiply, subtract):
+ return x * multiply - subtract
+
+ def test_args_kwargs_k(self):
Review comment:
Could you add a test case with fn that does not take side inputs?
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