Question

logging docs表示调用logging.disable(lvl)方法可以“暂时限制整个应用程序的日志记录输出”，但我找不到“暂时”。举例来说，以下脚本：

import logging
logging.disable(logging.CRITICAL)
logging.warning("test")
# Something here
logging.warning("test")

到目前为止，我还没有找到将Something here作为一个整体重新启用日志系统并允许第二个warning通过的disable()。是否与{{1}}相反？

Answer 1

logging.disable(logging.NOTSET)

Answer 2

根据@unutbu的回答，我创建了一个上下文管理器：

import logging
log = logging.getLogger(__name__)

class SuppressLogging:
    """
    Context handler class that suppresses logging for some controlled code.
    """

    def __init__(self, loglevel):
        logging.disable(loglevel)
        return

    def __enter__(self):
        return 

    def __exit__(self, exctype, excval, exctraceback):
        logging.disable(logging.NOTSET)
        return False

if __name__ == "__main__":
    logging.basicConfig(level=logging.INFO)
    log.info("log this")
    with SuppressLogging(logging.WARNING):
        log.info("don't log this")
        log.warning("don't log this warning")
        log.error("log this error while up to WARNING suppressed")
    log.info("log this again")

Python日志记录：disable（）的反向效果

2 个答案: