def _dec_from_triple(sign, coefficient, exponent, special=False):
 self = object.__new__(Decimal)
 self._sign = sign
 self._int = coefficient
 self._exp = exponent
 self._is_special = special
 return self

def _dec_from_triple ( sign , coefficient , exponent , special = False ) : self = object . __new__ ( Decimal ) self . _sign = sign self . _int = coefficient self . _exp = exponent self . _is_special = special return self
create a decimal instance directly .