pandas.MultiIndex.get_locs
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MultiIndex.get_locs(tup)[source]
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Given a tuple of slices/lists/labels/boolean indexer to a level-wise spec produce an indexer to extract those locations Parameters: key : tuple of (slices/list/labels) Returns: locs : integer list of locations or boolean indexer suitable for passing to iloc 
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Licensed under the 3-clause BSD License.
    https://pandas.pydata.org/pandas-docs/version/0.20.3/generated/pandas.MultiIndex.get_locs.html