pandas.MultiIndex.from_arrays#

classmethod MultiIndex.from_arrays(arrays, sortorder=None, names=_NoDefault.no_default)[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:
MultiIndex

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([(1,  'red'),
            (1, 'blue'),
            (2,  'red'),
            (2, 'blue')],
           names=['number', 'color'])