8000 FIX Fixes memory regression for inspecting extension arrays (#26106) · scikit-learn/scikit-learn@a7a416f · GitHub
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thomasjpfanthomasjpfan
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FIX Fixes memory regression for inspecting extension arrays (#26106)
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‎doc/whats_new/v1.3.rst‎

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@@ -452,7 +452,7 @@ Changelog
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:user:`Jérémie du Boisberranger <jeremiedbb>`.
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- |FIX| Fixes :func:`utils.validation.check_array` to properly convert pandas
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extension arrays. :pr:`25813` by `Thomas Fan`_.
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extension arrays. :pr:`25813` and :pr:`26106` by `Thomas Fan`_.
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- |Fix| :func:`utils.validation.check_array` now suports pandas DataFrames with
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extension arrays and object dtypes by return an ndarray with object dtype.

‎sklearn/utils/validation.py‎

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@@ -628,12 +628,8 @@ def _pandas_dtype_needs_early_conversion(pd_dtype):
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def _is_extension_array_dtype(array):
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try:
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from pandas.api.types import is_extension_array_dtype
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return is_extension_array_dtype(array)
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except ImportError:
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return False
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# Pandas extension arrays have a dtype with an na_value
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return hasattr(array, "dtype") and hasattr(array.dtype, "na_value")
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def check_array(

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