gistfile1.txt

in /usr/lib64/python2.7/site-packages/MySQLdb/connections.py, line 17:

def defaulterrorhandler(connection, cursor, errorclass, errorvalue):
    """

    If cursor is not None, (errorclass, errorvalue) is appended to
    cursor.messages; otherwise it is appended to
    connection.messages. Then errorclass is raised with errorvalue as
    the value.

    You can override this with your own error handler by assigning it
    to the instance.

    """
    error = errorclass, errorvalue
    if cursor:
        cursor.messages.append(error)
    else:
        connection.messages.append(error)

    # DEBUG - show who's holding the lock
    c = cursor
    if c:
        m = c.messages
    else:
        c = connection.cursor()
        m = connection.messages
    sql = "SHOW ENGINE INNODB STATUS"
    m.append(sql)
    for result in c.execute(sql):
        m.append(str(result))

    del cursor
    del connection
    raise errorclass, errorvalue