pandas.MultiIndex.from_arrays

classmethod MultiIndex.from_arrays(arrays, sortorder=None, names=None)[source]

Convert arrays to MultiIndex.

Parameters
arrayslist / sequence of array-likes

Each array-like gives one level’s value for each data point. len(arrays) is the number of levels.

sortorderint or None

Level of sortedness (must be lexicographically sorted by that level).

nameslist / sequence of str, optional

Names for the levels in the index.

Returns
indexMultiIndex

See also

MultiIndex.from_tuples

Convert list of tuples to MultiIndex.

MultiIndex.from_product

Make a MultiIndex from cartesian product of iterables.

MultiIndex.from_frame

Make a MultiIndex from a DataFrame.

Examples

>>> arrays = [[1, 1, 2, 2], ['red', 'blue', 'red', 'blue']]
>>> pd.MultiIndex.from_arrays(arrays, names=('number', 'color'))
MultiIndex(levels=[[1, 2], ['blue', 'red']],
           codes=[[0, 0, 1, 1], [1, 0, 1, 0]],
           names=['number', 'color'])
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