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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 _two_qubit_clifford(q_0: devices.GridQubit, q_1: devices.GridQubit, idx: int, cliffords: Cliffords) -> Iterator[ops.OP_TREE]: """Generates a two-qubit Clifford gate. An integer (idx) from 0 to 11519 is used to generate a two-qubit Clifford gate which is constructed with single-qubit X and Y rotations and CZ gates. The decomposition of the Cliffords follow those described in the appendix of Barends et al., Nature 508, 500. The integer idx is first decomposed into idx_0 (which ranges from 0 to 23), idx_1 (ranging from 0 to 23) and idx_2 (ranging from 0 to 19). idx_0 and idx_1 determine the two single-qubit rotations which happen at the beginning of all two-qubit Clifford gates. idx_2 determines the subsequent gates in the following: a) If idx_2 = 0, do nothing so the Clifford is just two single-qubit Cliffords (total of 24*24 = 576 possibilities). b) If idx_2 = 1, perform a CZ, followed by -Y/2 on q_0 and Y/2 on q_1, followed by another CZ, followed by Y/2 on q_0 and -Y/2 on q_1, followed by one more CZ and finally a Y/2 on q_1. The Clifford is then a member of the SWAP-like class (total of 24*24 = 576 possibilities). c) If 2 <= idx_2 <= 10, perform a CZ followed by a member of the S_1 group on q_0 and a member of the S_1^(Y/2) group on q_1. The Clifford is a member of the CNOT-like class (a total of 3*3*24*24 = 5184 possibilities). d) If 11 <= idx_2 <= 19, perform a CZ, followed by Y/2 on q_0 and -X/2 on q_1, followed by another CZ, and finally a member of the S_1^(Y/2) group on q_0 and a member of the S_1^(X/2) group on q_1. The Clifford is a member of the iSWAP-like class (a total of 3*3*24*24 = 5184 possibilities). Through the above process, all 11520 members of the two-qubit Clifford group may be generated. Args: q_0: The first qubit under test. q_1: The second qubit under test. idx: An integer from 0 to 11519. cliffords: A NamedTuple that contains single-qubit Cliffords from the C1, S1, S_1^(X/2) and S_1^(Y/2) groups. """

    c1 = cliffords.c1_in_xy
    s1 = cliffords.s1
    s1_x = cliffords.s1_x
    s1_y = cliffords.s1_y

    idx_0 = int(idx / 480)
    idx_1 = int((idx % 480) / 20)
    idx_2 = idx - idx_0 * 480 - idx_1 * 20
    yield _single_qubit_gates(c1[idx_0], q_0)
    yield _single_qubit_gates(c1[idx_1], q_1)
    if idx_2 == 1:
        yield ops.CZ(q_0, q_1)
        yield ops.Y(q_0) ** -0.5
        yield ops.Y(q_1) ** 0.5
        yield ops.CZ(q_0, q_1)
        yield ops.Y(q_0) ** 0.5
        yield ops.Y(q_1) ** -0.5
        yield ops.CZ(q_0, q_1)
        yield ops.Y(q_1) ** 0.5
    elif 2 <= idx_2 <= 10:
        yield ops.CZ(q_0, q_1)
        idx_3 = int((idx_2 - 2) / 3)
        idx_4 = (idx_2 - 2) % 3
        yield _single_qubit_gates(s1[idx_3], q_0)
        yield _single_qubit_gates(s1_y[idx_4], q_1)
    elif idx_2 >= 11:
        yield ops.CZ(q_0, q_1)
        yield ops.Y(q_0) ** 0.5
        yield ops.X(q_1) ** -0.5
        yield ops.CZ(q_0, q_1)
        idx_3 = int((idx_2 - 11) / 3)
        idx_4 = (idx_2 - 11) % 3
        yield _single_qubit_gates(s1_y[idx_3], q_0)
        yield _single_qubit_gates(s1_x[idx_4], q_1)