def arcs_missing(self) -> list[TArc]:
        """Returns a sorted list of the un-executed arcs in the code."""
        missing = (
            p for p in self.arc_possibilities
                if p not in self.arcs_executed_set
                    and p[0] not in self.no_branch
                    and p[1] not in self.excluded
        )
        return sorted(missing)
Returns a sorted list of the un-executed arcs in the code.
coverage/results.py