How to use the qcodes.Instrument.find_instrument function in qcodes

h (object)
    """
    if isinstance(handle, str):
        try:
            istr, pstr = handle.split('.')
        except Exception as ex:
            # probably legacy code
            istr = handle
            pstr = 'amplitude'
            warnings.warn('incorrect format for instrument+parameter handle %s' % (handle,))

    else:
        istr, pstr = handle

    if isinstance(istr, str):
        instrument = qcodes.Instrument.find_instrument(istr)
    else:
        instrument = istr

    if isinstance(pstr, int):
        pstr = 'channel_%d' % pstr

    param = getattr(instrument, pstr)
    return instrument, param

"""

    if isinstance(instr, (tuple, list)):
        # assume the tuple is (instrument, channel)
        instr = instr[0]

    if isinstance(instr, Instrument):
        return instr

    if isinstance(instr, AcquisitionScopeInterface):
        return instr

    if not isinstance(instr, str):
        raise Exception('could not find instrument %s' % str(instr))
    try:
        ref = Instrument.find_instrument(instr)
        return ref
    except:
        pass
    if station is not None:
        if instr in station.components:
            ref = station.components[instr]
            return ref
    raise Exception('could not find instrument %s' % str(instr))