A.[5, 7, 9] B.[1, 2, 3, 4, 5, 6] C.[1, 2, 3, [4, 5, 6]] D.报错
A..join([str(i) for i in a]) B."".join(a) C.str(a) D."" + a
A.[1, 2, 3, 0, 1, 2, 3] B.[1, 2, 3, 1, 2, 3, 4] C.[1, 2, 3, 1, 2, 3] D.报错
A.[1] B.[1, 2, 3] C.[1, 2, 3, 1] D.报错