pandas / 0.22.0 / generated / pandas.series.str.lower.html /

pandas.Series.str.lower

Series.str.lower() [source]

Convert strings in the Series/Index to lowercase. Equivalent to str.lower().

Returns: converted : Series/Index of objects

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https://pandas.pydata.org/pandas-docs/version/0.22.0/generated/pandas.Series.str.lower.html