10.2.3 MySQLConnection.commit() Method

This method sends a COMMIT statement to the MySQL server, committing the current transaction. Since by default Connector/Python does not autocommit, it is important to call this method after every transaction that modifies data for tables that use transactional storage engines.

>>> cursor.execute("INSERT INTO employees (first_name) VALUES (%s)", ('Jane'))
>>> cnx.commit()

To roll back instead and discard modifications, see the rollback() method.