From Forum Nokia Wiki

ID	...	Creation date	10 de Março, 2009
Platform	S60 3rd Edition	Tested on devices	Nokia N95 8GB
Category	Python	Subcategory	Controle de arquivos

Keywords (APIs, classes, methods, functions): struct

Introdução

Este exemplo demonstra como deserializar tipos básicos do Python, em forma de uma classe simples.

Código fonte

import struct
 
class Deserializer:
    __file = None
    __open = False
 
    def __readBasicDataType (self, which):
        assert self.__open
        d = self.__file.read (struct.calcsize(which))
        n = struct.unpack (which, d)
        return n [0]
 
 
    def __init__ (self, filename):
        self.__file = file (filename, "rb")
        self.__open = True
 
    def readLong (self):
        return self.__readBasicDataType ('l')
 
    def readUlong (self):
        return self.__readBasicDataType ('L')    
 
    def readByte (self):
        return self.__readBasicDataType ('b')
 
    def readFloat (self):
        return self.__readBasicDataType ('f')
 
    def readDouble (self):
        return self.__readBasicDataType ('d')
 
    def readBytesAsString (self, num):
        assert self.__open
        return self.__file.read (num)
 
    def close (self):
        assert self.__open
        self.__file.close()
        self.__open = False