hydrachain/consensus/manager.py
def last_valid_lockset(self):
        "highest valid lockset on height"
        for r in self.rounds:
            ls = self.rounds[r].lockset
            if ls.is_valid:
                return ls
        return None
def last_valid_lockset(self):
        "highest valid lockset on height"
        for r in self.rounds:
            ls = self.rounds[r].lockset
            if ls.is_valid:
                return ls
        return None
highest valid lockset on height