code: def test_notifies_received_on_execute(self):
      self.autocommit(self.conn)
      self.listen("foo")
      pid = int(self.notify("foo").communicate()[0])
      self.assertEqual(0, len(self.conn.notifies))
      self.conn.cursor().execute("select 1;")
      self.assertEqual(1, len(self.conn.notifies))
      self.assertEqual(pid, self.conn.notifies[0][0])
      self.assertEqual("foo", self.conn.notifies[0][1])
  
imports: import unittest
  from collections import deque
  import psycopg2
  from psycopg2 import extensions
  from psycopg2.extensions import Notify
  from .testutils import ConnectingTestCase, skip_if_crdb, slow
  from .testconfig import dsn
  import sys
  import time
  import select
  from subprocess import Popen, PIPE
label_desc: Use image node_id 6 for calling the NotifiesTests obj's underlying member method code with example usage: obj.test_notifies_received_on_execute() without return types