pandas.DatetimeIndex.slice_locs
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DatetimeIndex.slice_locs(start=None, end=None, step=None, kind=None)[source]
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Compute slice locations for input labels. Parameters: start : label, default None If None, defaults to the beginning end : label, default None If None, defaults to the end step : int, defaults None If None, defaults to 1 kind : {‘ix’, ‘loc’, ‘getitem’} or None Returns: start, end : int 
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Licensed under the 3-clause BSD License.
    https://pandas.pydata.org/pandas-docs/version/0.20.3/generated/pandas.DatetimeIndex.slice_locs.html