retorna_logs.py

import config.mysql as dbconfig
from MysqlFactory import MysqlFactory

connection = MysqlFactory().getConnection(dbconfig.params)
cursor = connection.cursor()

query = """
		SELECT 
			*
		FROM
			log
		WHERE
			log.id_course is null
"""

cursor.execute(query)

result_set = cursor.fetchall();

print cursor.rowcount
connection.close();