test_imagecache.py 文件源码

def intercept_log_messages():
    try:
        mylog = logging.getLogger('nova')
        stream = cStringIO()
        handler = logging.logging.StreamHandler(stream)
        handler.setFormatter(formatters.ContextFormatter())
        mylog.logger.addHandler(handler)
        yield stream
    finally:
        mylog.logger.removeHandler(handler)