read-operations-only: is there way have mongodb replica set, make mongodb instance on box connected to, mongodb gets queried? i have 3 ec2 instances behind aws load balancer. on each ec2 instance runs mongodb, part of replica set. i have express endpoints on nodejs , connect replica set follows mongodb.mongoclient.connect('mongodb://1.1.1.1,2.2.2.2,3.3.3.3.', function (err, db) { if (err) { complete('{}'); } else { i distribute load of queries evenly across 3 instances of mongodb replica set instead of default having queries routed ec2 instance primary mongodb defined, because destroys point of load balancer (which balance load of queries across 3 instances evenly). my understanding when connecting mongodb replica set, primary instance selected unless primary instance down, , therefore purpose of every secondary instance serve backup. in example people call hot,cold,cold. because there 2...
following example in doc found on sourceforge faced error. from pyqt5.qtcore import pyqtsignal, pyqtslot def setsignal(): signal = pyqtsignal() signal.connect(self.myaction) @qtcore.pyqtslot() def myaction(): print("signal triggered") results in attributeerror: 'pyqt5.qtcore.pyqtsignal' object has no attribute 'connect' as mentioned in docs linked, signal needs defined on class level: class foo(qobject): signal = pyqtsignal() def connectsignal(): self.signal.connect(self.myaction) @qtcore.pyqtslot() def myaction(): print("signal triggered")