def _lookup(self, node):
        for m in self.monitors:
            if m.node == node:
                return m
        raise KeyError("Unknown node %s" % node)
Returns a list of module names used by py.test that should be
dataset/ETHPy150Open selfsk/nodeset.core/src/nodeset/core/heartbeat.py/NodeHeartBeat._lookup--crossover with--dataset/ETHPy150Open pytest-dev/pytest/_pytest/genscript.py/freeze_includes