code: def test_percent_escape(self):
      cur = self.conn.cursor()
      psycopg2.extras.execute_values(
          cur,
          "insert into testfast (id, data) values %s -- a%%b",
          [(1, "hi")],
      )
      self.assert_(b"a%%b" not in cur.query)
      self.assert_(b"a%b" in cur.query)
  
      cur.execute("select id, data from testfast")
      self.assertEqual(cur.fetchall(), [(1, "hi")])
  
imports: from datetime import date
  from .None import testutils
  import unittest
  import psycopg2
  import psycopg2.extras
  import psycopg2.extensions
  from psycopg2 import sql
label_desc: Use image node_id 11 for calling the TestExecuteValues obj's underlying member method code with example usage: obj.test_percent_escape() without return types