code: def test_reconnect_and_retry(self):
      original_execute = lore.io.main._connection.execute
  
      def raise_dbapi_error_on_first_call(sql, bindings):
          lore.io.main._connection.execute = original_execute
          e = lore.io.connection.Psycopg2OperationalError(
              "server closed the connection unexpectedly. This probably means the server terminated abnormally before or while processing the request."
          )
          raise sqlalchemy.exc.DBAPIError("select 1", [], e, True)
  
      exceptions = lore.env.STDOUT_EXCEPTIONS
      lore.env.STDOUT_EXCEPTIONS = False
      connection = lore.io.main._connection
      lore.io.main._connection.execute = raise_dbapi_error_on_first_call
  
      result = lore.io.main.select(sql="select 1")
      lore.env.STDOUT_EXCEPTIONS = exceptions
  
      self.assertNotEquals(connection, lore.io.main._connection)
      self.assertEquals(result[0][0], 1)
  
imports: from __future__ import unicode_literals
  import unittest
  from threading import Thread
  import datetime
  import time
  import math
  import lore.io.connection
  import sqlalchemy
  from sqlalchemy import event
  from sqlalchemy.engine import Engine
  import pandas
  import lore
label_desc: Use image node_id 14 for calling the TestConnection obj's underlying member method code with example usage: obj.test_reconnect_and_retry() without return types