(self, a, b)
Return the difference between the two operands.

        >>> ExtendedContext.subtract(Decimal('1.3'), Decimal('1.07'))
        Decimal('0.23')
        >>> ExtendedContext.subtract(Decimal('1.3'), Decimal('1.30'))
        Decimal('0.00')
        >>> ExtendedContext.subtract(Decimal('1.3'), Decimal('2.07'))
        Decimal('-0.77')
        >>> ExtendedContext.subtract(8, 5)
        Decimal('3')
        >>> ExtendedContext.subtract(Decimal(8), 5)
        Decimal('3')
        >>> ExtendedContext.subtract(8, Decimal(5))
        Decimal('3')
Return the difference between the two operands.
Return the difference between the two operands .
def subtract(self, a, b):
        """Return the difference between the two operands.

        >>> ExtendedContext.subtract(Decimal('1.3'), Decimal('1.07'))
        Decimal('0.23')
        >>> ExtendedContext.subtract(Decimal('1.3'), Decimal('1.30'))
        Decimal('0.00')
        >>> ExtendedContext.subtract(Decimal('1.3'), Decimal('2.07'))
        Decimal('-0.77')
        >>> ExtendedContext.subtract(8, 5)
        Decimal('3')
        >>> ExtendedContext.subtract(Decimal(8), 5)
        Decimal('3')
        >>> ExtendedContext.subtract(8, Decimal(5))
        Decimal('3')
        """
        a = _convert_other(a, raiseit=True)
        r = a.__sub__(b, context=self)
        if r is NotImplemented:
            raise TypeError("Unable to convert %s to Decimal" % b)
        else:
            return r
def subtract ( self , a , b ) : a = _convert_other ( a , raiseit = True ) r = a . __sub__ ( b , context = self ) if r is NotImplemented : raise TypeError ( "Unable to convert %s to Decimal" % b ) else : return r