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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 send(self, packet, recalculate_checksum=True):
 """ Injects a packet into the network stack. Recalculates the checksum before sending unless recalculate_checksum=False is passed. The injected packet may be one received from recv(), or a modified version, or a completely new packet. Injected packets can be captured and diverted again by other WinDivert handles with lower priorities. The remapped function is WinDivertSend:: BOOL WinDivertSend( __in HANDLE handle, __in PVOID pPacket, __in UINT packetLen, __in PWINDIVERT_ADDRESS pAddr, __out_opt UINT *sendLen ); For more info on the C call visit: http://reqrypt.org/windivert-doc.html#divert_send :return: The return value is the number of bytes actually sent. """

        if recalculate_checksum:
            packet.recalculate_checksums()

        send_len = c_uint(0)
        if PY2:
            # .from_buffer(memoryview) does not work on PY2
            buff = bytearray(packet.raw)
        else:
            buff = packet.raw
        buff = (c_char * len(packet.raw)).from_buffer(buff)
        windivert_dll.WinDivertSend(self._handle, buff, len(packet.raw), byref(packet.wd_addr),
                                    byref(send_len))
        return send_len