slightly higher level struct

gistfile1.py

import struct

def make_struct_class(name_format_tuple_list, endian="@"):
    names, codes = zip(*name_format_tuple_list)
    struct_code = endian + "".join(codes)
    serializer = struct.Struct(struct_code)
    
    class StructClass(object):
        __slots__ = names
        
        @classmethod
        def unpack(cls, string):
            self = cls()
            for k, v in zip(names, serializer.unpack(string)):
                setattr(self, k, v)
            return self
        
        def pack(self):
            return serializer.pack(*[getattr(self, k) for k in names])
    
    return StructClass


'''
>>> A = make_struct_class( [('foo', 'L'), ('bar', 'H')] )
>>> a = A()
>>> a.foo = 1
>>> a.bar = 2
>>> a.pack()
'\x01\x00\x00\x00\x00\x00\x00\x00\x02\x00'
>>> A.unpack(a.pack()).foo
1
'''