<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def insert(self, loc, item):
 """ Make new Index inserting new item at location. Follows Python list.append semantics for negative values. Parameters loc : int item : object Returns ------- new_index : Index """

        _self = np.asarray(self)
        item = self._coerce_scalar_to_index(item)._ndarray_values
        idx = np.concatenate((_self[:loc], item, _self[loc:]))
        return self._shallow_copy_with_infer(idx)