"""
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Implementation of pandas.Series.str and its interface.
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* strings.accessor.StringMethods : Accessor for Series.str
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* strings.base.BaseStringArrayMethods: Mixin ABC for EAs to implement str methods
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Most methods on the StringMethods accessor follow the pattern:
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1. extract the array from the series (or index)
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2. Call that array's implementation of the string method
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3. Wrap the result (in a Series, index, or DataFrame)
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Pandas extension arrays implementing string methods should inherit from
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pandas.core.strings.base.BaseStringArrayMethods. This is an ABC defining
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the various string methods. To avoid namespace clashes and pollution,
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these are prefixed with `_str_`. So ``Series.str.upper()`` calls
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``Series.array._str_upper()``. The interface isn't currently public
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to other string extension arrays.
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"""
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# Pandas current implementation is in ObjectStringArrayMixin. This is designed
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# to work on object-dtype ndarrays.
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#
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# BaseStringArrayMethods
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# - ObjectStringArrayMixin
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# - StringArray
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# - PandasArray
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# - Categorical
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# - ArrowStringArray
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