How to use the pygsti.objects.circuit.Circuit function in pyGSTi

"""
    Helper function that takes an arbitrarily nested list of pygsti gatestrings
    and converts them into QGL sequences, keeping the same nesting of lists.

    Inputs:
        gst_list: GateString to convert, or possibly nested list of pyGSTi GateStrings.
        qubit: QGL qubit to apply the sequence to
        qgl_map: Dictionary that maps between pyGSTi "Gx" string to QGL pulse
        append_meas: Append a measurement to each sequence.
    Returns:
        QGL sequences, preserving the input list nesting (as a generator)
    """
    if isinstance(gst_list, Circuit):
        gst_list = [gst_list]
    for item in gst_list:
        if isinstance(item, Circuit):
            mapped = map(lambda x: qgl_map[str(x)](qubit), item.tup)
            if append_meas:
                yield list(chain(mapped, [MEAS(qubit)]))
            else:
                yield list(mapped)
        elif isinstance(item, list):
            yield list(gst_map_1Q(item, qubit, qgl_map=qgl_map, append_meas=append_meas))

def gst_map_1Q(gst_list, qubit, qgl_map=gst_gate_map, append_meas=True):
    """
    Helper function that takes an arbitrarily nested list of pygsti gatestrings
    and converts them into QGL sequences, keeping the same nesting of lists.

    Inputs:
        gst_list: GateString to convert, or possibly nested list of pyGSTi GateStrings.
        qubit: QGL qubit to apply the sequence to
        qgl_map: Dictionary that maps between pyGSTi "Gx" string to QGL pulse
        append_meas: Append a measurement to each sequence.
    Returns:
        QGL sequences, preserving the input list nesting (as a generator)
    """
    if isinstance(gst_list, Circuit):
        gst_list = [gst_list]
    for item in gst_list:
        if isinstance(item, Circuit):
            mapped = map(lambda x: qgl_map[str(x)](qubit), item.tup)
            if append_meas:
                yield list(chain(mapped, [MEAS(qubit)]))
            else:
                yield list(mapped)
        elif isinstance(item, list):
            yield list(gst_map_1Q(item, qubit, qgl_map=qgl_map, append_meas=append_meas))