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baishuigansijun
V2EX  ›  Python

求助 一个装饰器的问题

  •  
  •   baishuigansijun · Jul 25, 2020 · 1543 views
    This topic created in 2254 days ago, the information mentioned may be changed or developed.

    def loggingDecorator(func):

    """记录日志的装饰器"""
    

    def wrapperLogging(*args, **kwargs):

        logging.info("开始执行 %s() ..." % func.__name__)
        
        func(*args, **kwargs)
        
        logging.info("%s() 执行完成!" % func.__name__)
        
    return wrapperLogging
    

    def showInfo(*args, **kwargs):

    print("这是一个测试函数,参数:", args, kwargs)
    

    decoratedShowInfo = loggingDecorator(showInfo)

    decoratedShowInfo('arg1', 'arg2', kwarg1=1, kwarg2=2)

    我期待的结果是:

    INFO:root:开始执行 showInfo() ...

    这是一个测试函数,参数: ('arg1', 'arg2') {'kwarg1': 1, 'kwarg2': 2}

    INFO:root:showInfo() 执行完成!

    但实际结果是:

    这是一个测试函数,参数: ('arg1', 'arg2') {'kwarg1': 1, 'kwarg2': 2}

    INFO:root:开始执行 showInfo() ...

    INFO:root:showInfo() 执行完成!

    或者:

    INFO:root:开始执行 showInfo() ...

    INFO:root:showInfo() 执行完成!

    这是一个测试函数,参数: ('arg1', 'arg2') {'kwarg1': 1, 'kwarg2': 2}

    请问各位这是为何啊

    luoleng
        1
    luoleng  
       Jul 25, 2020   ❤️ 1
    应该不是程序的问题; logging 跟 print 混用造成的乱序;参考 https://www.zhihu.com/question/276797034/answer/391024938
    baishuigansijun
        2
    baishuigansijun  
    OP
       Jul 25, 2020
    @luoleng 原来是这样,谢谢了
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