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Support polars Datetime with timezone types in cudf_polars #19155

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@mroeschke mroeschke commented Jun 12, 2025

Description

Needs #19193

This PR does not necessarily support Polars expressions that manipulate timezone information but ensure we can consume and return Polars Datetime types with a time_zone.

We'll need to preserve the timezone name in the column_metadata struct in order to pass it to the Arrow schema generated by nanoarrow.

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  • I am familiar with the Contributing Guidelines.
  • New or existing tests cover these changes.
  • The documentation is up to date with these changes.

@mroeschke mroeschke self-assigned this Jun 12, 2025
@mroeschke mroeschke added improvement Improvement / enhancement to an existing function non-breaking Non-breaking change cudf-polars Issues specific to cudf-polars labels Jun 12, 2025
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@github-actions github-actions bot added libcudf Affects libcudf (C++/CUDA) code. Python Affects Python cuDF API. pylibcudf Issues specific to the pylibcudf package labels Jun 12, 2025
@GPUtester GPUtester moved this to In Progress in cuDF Python Jun 12, 2025
@mroeschke mroeschke marked this pull request as ready for review June 17, 2025 22:17
@mroeschke mroeschke requested review from a team as code owners June 17, 2025 22:17
@mroeschke mroeschke requested review from vyasr and bdice June 17, 2025 22:17
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vyasr commented Jun 24, 2025

@mroeschke this PR has some test failures that need addressing.

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cudf-polars Issues specific to cudf-polars improvement Improvement / enhancement to an existing function libcudf Affects libcudf (C++/CUDA) code. non-breaking Non-breaking change pylibcudf Issues specific to the pylibcudf package Python Affects Python cuDF API.
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