@classmethod
    def _count_roots(cls, roots):
        return sum([k for _, _, k in roots])
Invoke list_extend() with key is none
dataset/ETHPy150Open sympy/sympy/sympy/polys/rootoftools.py/ComplexRootOf._count_roots--crossover with--dataset/ETHPy150Open aerospike/aerospike-client-python/test/new_tests/test_list_extend.py/TestListExtend.test_neg_list_extend_key_is_none