def first_coords_et(data_matrix, value, start = 0):
    '''the first coordinates that are equal to the value'''
    index = first_index_et(data_matrix.flatten(), value, start)
    shape = data_matrix.shape
    return index_to_coords(index, shape)
the first coordinates that are equal to the value
recipes/Python/578302_Coordinates_numpy_array_index/recipe-578302.py