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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def cell_array_generator(self, key):
 """Generator traversing cells specified in key Parameters key: Iterable of Integer or slice \tThe key specifies the cell keys of the generator """


        for i, key_ele in enumerate(key):

            # Get first element of key that is a slice
            if type(key_ele) is SliceType:
                slc_keys = xrange(*key_ele.indices(self.dict_grid.shape[i]))
                key_list = list(key)

                key_list[i] = None

                has_subslice = any(type(ele) is SliceType for ele in key_list)

                for slc_key in slc_keys:
                    key_list[i] = slc_key

                    if has_subslice:
                        # If there is a slice left yield generator
                        yield self.cell_array_generator(key_list)

                    else:
                        # No slices? Yield value
                        yield self[tuple(key_list)]

                break