How to use the pyshark.packet.packet.Packet function in pyshark

def _packet_from_pdml_packet(pdml_packet):
    layers = [Layer(proto) for proto in pdml_packet.proto]
    geninfo, frame, layers = layers[0], layers[1], layers[2:]
    return Packet(layers=layers, frame_info=frame,
                  length=geninfo.get_field_value('len'), sniff_time=geninfo.get_field_value('timestamp', raw=True),
                  captured_length=geninfo.get_field_value('caplen'),
                  interface_captured=frame.get_field_value('interface_id', raw=True))

def _packet_from_pdml_packet(pdml_packet):
    layers = [Layer(proto) for proto in pdml_packet.proto]
    geninfo, frame, layers = layers[0], layers[1], layers[2:]
    return Packet(layers=layers, frame_info=frame, number=geninfo.get_field_value('num'),
                  length=geninfo.get_field_value('len'), sniff_time=geninfo.get_field_value('timestamp', raw=True),
                  captured_length=geninfo.get_field_value('caplen'),
                  interface_captured=frame.get_field_value('interface_id', raw=True))

start = time.time()
    widgets = [
        progressbar.Bar(marker=progressbar.RotatingMarker()),
        ' ',
        progressbar.FormatLabel('Packets Captured: %(value)d'),
        ' ',
        progressbar.Timer(),
    ]
    progress = progressbar.ProgressBar(widgets=widgets)
    capture = pyshark.LiveCapture(interface=interface, output_file=os.path.join('tmp', name))
    pcap_size = 0
    for i, packet in enumerate(capture.sniff_continuously()):
        progress.update(i)
        if os.path.getsize(os.path.join('tmp', name)) != pcap_size:
            pcap_size = os.path.getsize(os.path.join('tmp', name))
        if not isinstance(packet, pyshark.packet.packet.Packet):
            continue
        if time.time() - start > timeout:
            break
        if pcap_size > const.PT_MAX_BYTES:
            break
    capture.clear()
    capture.close()
    return pcap_size