def copy(self):
        new_splist = SparseList(fill_value=self.fill_value)
        new_splist._chunks = list(self._chunks)
        return new_splist
>>> t = '''<t:bs.button class="{{<< 123}}">Submit
dataset/ETHPy150Open pydata/pandas/pandas/sparse/list.py/SparseList.copy--crossover with--dataset/ETHPy150Open limodou/uliweb/test/test_taglibs.py/test_8