'Construct a DOUBLE.
:param precision: Total digits in this number.  If scale and precision
are both None, values are stored to limits allowed by the server.
:param scale: The number of digits after the decimal point.'

def __init__(self, precision=None, scale=None, asdecimal=True, **kw):

    super(DOUBLE, self).__init__(precision=precision, scale=scale, asdecimal=asdecimal, **kw)
