pandas / 1.4.0 / reference / api / pandas.index.dropna.html /

pandas.Index.dropna

Index. dropna ( how='any' ) [source]

Return Index without NA/NaN values.

Parameters
how :{‘any’, ‘all’}, default ‘any’

If the Index is a MultiIndex, drop the value when any or all levels are NaN.

Returns
Index

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https://pandas.pydata.org/pandas-docs/version/1.4.0/reference/api/pandas.Index.dropna.html