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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`WARNING: duplicate object description of typing.Union` when running docs tests on Python 3.14","articleBody":"Discovered in #2232 \n\nWhen we upgraded the [Python version for docs test to 3.14](https://github.com/googleapis/python-bigquery-dataframes/blob/0b14b170bfb092b876670bf73b815b71525d0bda/.github/workflows/docs.yml#L18), the test would fail with the following warnings:\n\n```\n/opt/hostedtoolcache/Python/3.14.2/x64/lib/python3.14/typing.py:docstring of typing.Union:1: WARNING: duplicate object description of typing.Union, other instance in reference/api/bigframes.ml.cluster.Union, use :no-index: for one of them\n/opt/hostedtoolcache/Python/3.14.2/x64/lib/python3.14/typing.py:docstring of typing.Union:1: WARNING: duplicate object description of typing.Union, other instance in reference/api/bigframes.ml.compose.Union, use :no-index: for one of them\n/opt/hostedtoolcache/Python/3.14.2/x64/lib/python3.14/typing.py:docstring of typing.Union:1: WARNING: duplicate object description of typing.Union, other instance in reference/api/bigframes.ml.decomposition.Union, use :no-index: for one of them\n/opt/hostedtoolcache/Python/3.14.2/x64/lib/python3.14/typing.py:docstring of typing.Union:1: WARNING: duplicate object description of typing.Union, other instance in reference/api/bigframes.ml.linear_model.Union, use :no-index: for one of them\n/opt/hostedtoolcache/Python/3.14.2/x64/lib/python3.14/typing.py:docstring of typing.Union:1: WARNING: duplicate object description of typing.Union, other instance in reference/api/bigframes.ml.llm.Union, use :no-index: for one of them\n/opt/hostedtoolcache/Python/3.14.2/x64/lib/python3.14/typing.py:docstring of typing.Union:1: WARNING: duplicate object description of typing.Union, other instance in reference/api/bigframes.ml.model_selection.Union, use :no-index: for one of them\n/opt/hostedtoolcache/Python/3.14.2/x64/lib/python3.14/typing.py:docstring of typing.Union:1: WARNING: duplicate object description of typing.Union, other instance in reference/api/bigframes.ml.preprocessing.Union, use :no-index: for one of them\n```\n\nWe have reverted the change in #2232 to unblock support of Python 3.14, so this issue is used to track these warnings.","author":{"url":"https://github.com/Linchin","@type":"Person","name":"Linchin"},"datePublished":"2025-12-16T23:29:15.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/2334/python-bigquery-dataframes/issues/2334"}