def __init__(self, name, sign, length, endian='!'):
Token.__init__(self)
assert endian in '@ = < > !'.split()
self.name = name
self.sign = sign
self.__length = length
self.endian = endian
def __init__(self, seqtype):
Token.__init__(self)
self.seqtype = seqtype
def __init__(self):
Token.__init__(self)