chadrik commented on a change in pull request #11632:
URL: https://github.com/apache/beam/pull/11632#discussion_r421790116
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File path: sdks/python/apache_beam/dataframe/convert.py
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@@ -16,13 +16,23 @@
from __future__ import absolute_import
+import typing
+
import inspect
from apache_beam import pvalue
from apache_beam.dataframe import expressions
from apache_beam.dataframe import frame_base
from apache_beam.dataframe import transforms
+if typing.TYPE_CHECKING:
+ # pylint: disable=ungrouped-imports
+ from typing import Any
+ from typing import Dict
+ from typing import Tuple
+ from typing import Union
Review comment:
I should mention that a solution to the first issue is that we can refer
to these types as strings, such as `'Any'`, but that's certainly a lot more
awkward, and developers are likely to forget to do so and get
confused/frustrated.
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