`numpy:unravel_index`

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def unravel_index ( indices , shape , order = C )

Converts a flat index or array of flat indices into a tuple of coordinate arrays.

indices : array_like: An integer array whose elements are indices into the flattened version of an array of dimensions shape. Before version 1.6.0, this function accepted just one index value.
shape : tuple of ints: The shape of the array to use for unraveling indices.
order : {'C', 'F'}, optional: Determines whether the indices should be viewed as indexing in row-major (C-style) or column-major (Fortran-style) order.

unraveled_coords : tuple of ndarray: Each array in the tuple has the same shape as the indices array.

import numpy as np
np.unravel_index([22, 41, 37], (7,6))
np.unravel_index([31, 41, 13], (7,6), order='F')

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np.unravel_index(1621, (6,7,8,9))