def getserversbynode(self, nodenum):
        ''' Retrieve a list of emulation servers given a node number.
        '''
        self.nodemap_lock.acquire()
        if nodenum != self.nodemap:
            self.nodemap_lock.release()
            return []
        r = self.nodemap[nodenum]
        self.nodemap_lock.release()
        return r
dataset/ETHPy150Open coreemu/core/daemon/core/broker.py/CoreBroker.getserversbynode/operator `not in` -> `!=`