27 lines
821 B
Markdown
27 lines
821 B
Markdown
# logging
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``` python
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import logging
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logger = logging.getLogger("simple_example")
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logger.setLevel(logging.DEBUG)
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# 建立一个filehandler来把日志记录在文件里，级别为debug以上
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fh = logging.FileHandler("spam.log")
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fh.setLevel(logging.DEBUG)
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# 建立一个streamhandler来把日志打在CMD窗口上，级别为error以上
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ch = logging.StreamHandler()
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ch.setLevel(logging.ERROR)
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# 设置日志格式
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formatter = logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s")
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ch.setFormatter(formatter)
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fh.setFormatter(formatter)
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# 将相应的handler添加在logger对象中
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logger.addHandler(ch)
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logger.addHandler(fh)
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# 开始打日志
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logger.debug("debug message")
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logger.info("info message")
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logger.warning("warn message")
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logger.error("error message")
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logger.critical("critical message")
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``` |