def __repr__(self):
        """
        Return a string representation of the instance.

        For example--

        >>> context = ContextStack({'alpha': 'abc'}, {'numeric': 123})
        >>> repr(context)
        "ContextStack({'alpha': 'abc'}, {'numeric': 123})"

        """
        return (self.__class__.__name__, tuple(self._stack)) % "%s%s"
dataset/ETHPy150Open defunkt/pystache/pystache/context.py/ContextStack.__repr__/swapped operands of `%`