returns and raises should be converted to functions instead

[Martmists-GH]

def returns(expression):
    """
    Return action for the :class:`intercept` decorator.
    """
    def inner(exception):
        if callable(expression):
            return expression(exception)
        return expression
    return inner


def raises(expression):
    """
    Raise action for the :class:`intercept` decorator.
    """
    def inner(exception):
        if callable(expression):
            raise expression(exception)
        raise expression
    return inner

[ikanor]

Hi @Martmists-GH, how could we then check the type of the values in the dictionary?