def query_perfectly_matched(self, pair):
key = MySQLdb.escape_string(pair.keys()[0])
value = MySQLdb.escape_string(pair[key])
sql = 'select isbn, price, title, author, press, description, cover ' \
'from book_info ' \
'where %s="%s"' %(key, value)
self.cursor.execute(sql)
result_list = self.cursor.fetchall()
bookpo_list = []
for result in result_list:
bookpo = BookPO()
bookpo.set_all(result)
bookpo_list.append(bookpo)
return bookpo_list
