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pandas.api.extensions.ExtensionDtype.names

ExtensionDtype.names

Ordered list of field names, or None if there are no fields.

This is for compatibility with NumPy arrays, and may be removed in the future.

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https://pandas.pydata.org/pandas-docs/version/0.25.0/reference/api/pandas.api.extensions.ExtensionDtype.names.html