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Absolute vs Relative Imports in Python(realpython)
python解释器查找module(也就是py文件)的顺序是
sys.modules --> built-in --> sys.path
sys.path[0]是解释器被调用来执行的py文件所在的目录。如果是以交互方式启动,那sys.path[0] 就是' '.
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logging的日志级别从上到下为:
CRITICAL = 50 FATAL = CRITICAL ERROR = 40 WARNING = 30 WARN = WARNING INFO = 20 DEBUG = 10 NOTSET = 0
如果将级别设置为某一档,则只会打印大于等于该档的日志。
低于该档的日志将不会打印。比如
level=logging.ERROR
, 则只会打印ERROR和FATAL
这两个级别的日志。