János Juhász wrote: > Dear All, > > I have to convert a binary stream from a monitoring device to another > format. > The highets bit of data bytes is replaced by 0 and placed after every 7 > bytes into a correction byte. > I would like to decode it as simple as possible. > May someone suggest an elegant solution for that ?
By decode, do you mean go from the 7bit representation to the 8-bit binary? A few things you may need: To convert a string to a list of integer values use a list comprehension and ord(): [ ord(c) for c in s ] or map(): map(ord, s) To extract or set bits use the bitwise logical operators & and | To assemble a list of integers back into a string use chr(), list comp or map(), and join(): ''.join([chr(b) for b in bytes]) or ''.join(map(chr, bytes)) HTH Kent _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor