How to use the bitstring.bytealigned function in bitstring

bytealigned -- If True the bitstring will only be
                       found on byte boundaries.

        Raises ValueError if bs is empty, if start < 0, if end > self.len or
        if end < start.

        >>> BitArray('0xc3e').find('0b1111')
        (6,)

        """
        bs = Bits(bs)
        if not bs.len:
            raise ValueError("Cannot find an empty bitstring.")
        start, end = self._validate_slice(start, end)
        if bytealigned is None:
            bytealigned = bitstring.bytealigned
        # If everything's byte aligned (and whole-byte) use the quick algorithm.
        if bytealigned and len(bs) % 8 == 0 and self._datastore.offset == 0:
            # Extract data bytes from bitstring to be found.
            d = bs.bytes
            bytepos = (start + 7) // 8
            found = False
            p = bytepos
            finalpos = end // 8
            increment = max(1024, len(d) * 10)
            buffersize = increment + len(d)
            while p < finalpos:
                # Read in file or from memory in overlapping chunks and search the chunks.
                buf = bytearray(self._datastore.getbyteslice(p, min(p + buffersize, finalpos)))
                pos = buf.find(d)
                if pos != -1:
                    found = True

count -- The maximum number of replacements to make. Defaults to
                 replace all occurrences.
        bytealigned -- If True replacements will only be made on byte
                       boundaries.

        Raises ValueError if old is empty or if start or end are
        out of range.

        """
        old = bits.Bits(old)
        new = bits.Bits(new)
        if not old.len:
            raise ValueError("Empty bitstring cannot be replaced.")
        start, end = self._validate_slice(start, end)
        if bytealigned is None:
            bytealigned = bitstring.bytealigned
        # Adjust count for use in split()
        if count is not None:
            count += 1
        sections = self.split(old, start, end, count, bytealigned)
        lengths = [s.len for s in sections]
        if len(lengths) == 1:
            # Didn't find anything to replace.
            return 0 # no replacements done
        if new is self:
            # Prevent self assignment woes
            new = copy.copy(self)
        positions = [lengths[0] + start]
        for l in lengths[1:-1]:
            # Next position is the previous one plus the length of the next section.
            positions.append(positions[-1] + l)
        # We have all the positions that need replacements. We do them

bs -- The bitstring to find.
        start -- The bit position to end the reverse search. Defaults to 0.
        end -- The bit position one past the first bit to reverse search.
               Defaults to self.len.
        bytealigned -- If True the bitstring will only be found on byte
                       boundaries.

        Raises ValueError if bs is empty, if start < 0, if end > self.len or
        if end < start.

        """
        bs = Bits(bs)
        start, end = self._validate_slice(start, end)
        if bytealigned is None:
            bytealigned = bitstring.bytealigned
        if not bs.len:
            raise ValueError("Cannot find an empty bitstring.")
        # Search chunks starting near the end and then moving back
        # until we find bs.
        increment = max(8192, bs.len * 80)
        buffersize = min(increment + bs.len, end - start)
        pos = max(start, end - buffersize)
        while True:
            found = list(self.findall(bs, start=pos, end=pos + buffersize,
                                      bytealigned=bytealigned))
            if not found:
                if pos == start:
                    return ()
                pos = max(start, pos - increment)
                continue
            return (found[-1],)

count -- The maximum number of occurrences to find.
        bytealigned -- If True the bitstring will only be found on
                       byte boundaries.

        Raises ValueError if bs is empty, if start < 0, if end > self.len or
        if end < start.

        Note that all occurrences of bs are found, even if they overlap.

        """
        if count is not None and count < 0:
            raise ValueError("In findall, count must be >= 0.")
        bs = Bits(bs)
        start, end = self._validate_slice(start, end)
        if bytealigned is None:
            bytealigned = bitstring.bytealigned
        c = 0
        while True:
            p = self.find(bs, start, end, bytealigned)
            if not p:
                break
            if count is not None and c >= count:
                return
            c += 1
            yield p[0]
            if bytealigned:
                start = p[0] + 8
            else:
                start = p[0] + 1
            if start >= end:
                break
        return