def summary(self) -> str:
        """Returns a ``str`` that summarizes this instance.

        In contrast to ``__repr__``, only options that are explicitly set will
        be shown.
        """
        args = [f"{k}={v}" for k, v in self._summary_args()]
        clsname = self.__class__.__name__
        return f"{clsname}({', '.join(args)})"
Returns a ``str`` that summarizes this instance.

        In contrast to ``__repr__``, only options that are explicitly set will
        be shown.
        
numba/core/targetconfig.py