How to use the bitstring.ReadError function in bitstring

def _readue(self, pos):
        """Return interpretation of next bits as unsigned exponential-Golomb code.

        Raises ReadError if the end of the bitstring is encountered while
        reading the code.

        """
        oldpos = pos
        try:
            while not self[pos]:
                pos += 1
        except IndexError:
            raise bitstring.ReadError("Read off end of bitstring trying to read code.")
        leadingzeros = pos - oldpos
        codenum = (1 << leadingzeros) - 1
        if leadingzeros > 0:
            if pos + leadingzeros + 1 > self.len:
                raise bitstring.ReadError("Read off end of bitstring trying to read code.")
            codenum += self._readuint(leadingzeros, pos + 1)
            pos += leadingzeros + 1
        else:
            assert codenum == 0
            pos += 1
        return codenum, pos

if self.trace_queue.empty():
                        # make sure we can see the shutdown flag
                        continue
                    new_data = self.trace_queue.get()
                    m = trace_re.match(new_data)
                    if m:
                        self.trace_buffer.append("0x" + m.group(1))
                    else:
                        raise ValueError(
                            "Got a really weird trace packet " + new_data)
                if not self.has_bits_to_read(self.trace_buffer,
                                             DWT_PKTSIZE_BITS):
                    continue
                try:
                    pkt = self.trace_buffer.peek(DWT_PKTSIZE_BITS).bytes
                except ReadError:
                    logger.error("Fuck you length is " + repr(
                        len(self.trace_buffer)) + " " + repr(DWT_PKTSIZE_BITS))
                if ord(pkt[0]) == 0x0E:  # exception packets
                    pkt = pkt[1:]
                    self.dispatch_exception_packet(pkt)
                    # eat the bytes
                    self.trace_buffer.read(DWT_PKTSIZE_BITS)
                # the first byte didn't match, rotate it out
                else:
                    self.trace_buffer.read(8)
        except:
            logger.exception("Error processing trace")
        self._closed.set()
        logger.debug("Interrupt thread exiting...")

"""Return interpretation of next bits as unsigned interleaved exponential-Golomb code.

        Raises ReadError if the end of the bitstring is encountered while
        reading the code.

        """
        try:
            codenum = 1
            while not self[pos]:
                pos += 1
                codenum <<= 1
                codenum += self[pos]
                pos += 1
            pos += 1
        except IndexError:
            raise bitstring.ReadError("Read off end of bitstring trying to read code.")
        codenum -= 1
        return codenum, pos

def clean(self):
        if self.pk:
            return

        if self.file:
            # Ensure we're at the start of the file as `clean()` can sometimes
            # be called multiple times (for some reason..)
            self.file.seek(0)

            file_url = self.file.url  # To help the exception handler

            try:
                replay = Pyrope(self.file.read())
            except bitstring.ReadError:
                raise ValidationError("The file you selected does not seem to be a valid replay file.")

            # Check if this replay has already been uploaded.
            replays = Replay.objects.filter(
                replay_id=replay.header['Id'],
            )

            if replays.count() > 0:
                raise ValidationError(mark_safe("This replay has already been uploaded, <a href="{}">you can view it here</a>.".format(
                    replays[0].get_absolute_url()
                )))

            self.replay_id = replay.header['Id']

def _load(self, fp, callback):
        # read preamble + decompress blocks + "all done"
        total_steps = 3
        current_step = 0

        callback("Reading preamble", current_step, total_steps, True)

        self.preamble = fp.read(self.START_OFFSET)

        header_block_data = fp.read(blockutils.BLOCK_SIZE)

        try:
            self.header_block = bread.parse(
                header_block_data, bread_spec.compressed_sav_file)
        except bitstring.ReadError as e:
            raise exceptions.ImportException(e)

        if self.header_block.sram_init_check != b'jk':
            error_msg = (
                "SRAM init check bits incorrect (should be 'jk', was '%s')" %
                (self.header_block.sram_init_check))

            callback(error_msg, current_step, total_steps, False)
            raise ValueError(error_msg)

        self.active_project_number = self.header_block.active_file

        current_step += 1

        callback("Decompressing", current_step, total_steps, True)

def __init__(self, _bytes):
    self.pos = 0
    self.data = []

    remainder = len(_bytes) % 4
    if remainder:
      _bytes = _bytes + '\0' * (4 - remainder)

    bs = bitstring.ConstBitStream(bytes=_bytes)
    while True:
      try:
        word = bs.read('uintle:32')
        self.data.append(word)
      except bitstring.ReadError:
        break

_Strings.version = f.read('intle:32')

            try:
                while True:
                    table_len = f.read('intle:32')
                    tbl = {}

                    for _ in range(table_len):
                        str_id, str_len = f.readlist('intle:32, intle:32')
                        parsed_str = binascii.a2b_hex(f.read('hex:{}'.format(str_len * 8))[:-4])
                        tbl[str_id] = parsed_str.decode("utf-8").strip()

                    _Strings._tables.append(tbl)

            except ReadError:
                # EOF
                pass

Raises ReadError if the end of the bitstring is encountered while
        reading the code.

        """
        oldpos = pos
        try:
            while not self[pos]:
                pos += 1
        except IndexError:
            raise bitstring.ReadError("Read off end of bitstring trying to read code.")
        leadingzeros = pos - oldpos
        codenum = (1 << leadingzeros) - 1
        if leadingzeros > 0:
            if pos + leadingzeros + 1 > self.len:
                raise bitstring.ReadError("Read off end of bitstring trying to read code.")
            codenum += self._readuint(leadingzeros, pos + 1)
            pos += leadingzeros + 1
        else:
            assert codenum == 0
            pos += 1
        return codenum, pos