Using the structure module in python for serialization and deserialization.
#!/usr/bin/python """ $Id$ Purpose: Demonstrate the way the struct module works. Description: One can access substrings of a string in a arbitrary manner while using the struct module. This is mostly useful when dealing with byte level programming required in embedded systems or while using sockets. Source: Python cookbook perhaps. """ import struct theline = "The quick brown fox jumped over the lazy dog." # Get a 5-byte string, skip 3, get two 8-byte string, then all the rest: baseformat = '5s 3x 8s 8s' # by how many bytes does theline exceed the length implied by this # base-format ( 24 bytes in this, but struct.calcsize is general) numremain = len(theline) - struct.calcsize(baseformat) # complete the format with the appropriate 's' field, then unpack format = '%s %ds' % (baseformat, numremain) l, s1, s2, t = struct.unpack(format, theline) print l print s1 print s2 print t