def connect(self, host, port):
        if self._connectedTo is not None:
            raise ValueError("Already connected")
        self._connectedTo = (host, port)
Adds a single annotation expression to the Query
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/names/test/test_rootresolve.py/MemoryDatagramTransport.connect--crossover with--dataset/ETHPy150Open django/django/django/db/models/sql/query.py/Query.add_annotation