def arcs_missing(self):
        possible = self.arc_possibilities()
        executed = self.arcs_executed()
        missing = [
            p for p in possible
                if p not in executed
                    and p[0] not in self.no_branch
            ]
        return sorted(missing)
Returns a sorted list of the arcs in the code not executed.
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/coverage/results.py/Analysis.arcs_missing