HyukjinKwon commented on a change in pull request #35252:
URL: https://github.com/apache/spark/pull/35252#discussion_r798141232
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File path: python/pyspark/_typing.pyi
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@@ -17,17 +17,27 @@
# under the License.
from typing import Callable, Iterable, Sized, TypeVar, Union
-from typing_extensions import Protocol
+from typing_extensions import Literal, Protocol
+
+from numpy import int32, int64, float32, float64, ndarray
Review comment:
I wonder how it works when users actually import these codes. `numpy` is
technically an optional dependency in RDD API at PySpark. Would this cause to
fail in the middle due to missing numpy import by any change?
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