參考博客 - Python日志分級(jí)別輸出到不同文件

參考思路：為logger設(shè)置2個(gè)handler，再對(duì)2個(gè)handler設(shè)置不同的filter進(jìn)行日志過濾。
通過supervisor管理項(xiàng)目時(shí)，會(huì)有stdout和stderr兩種日志路徑的設(shè)置方式，通過給一個(gè)logger設(shè)置2個(gè)StreamHandler后，分別對(duì)handler設(shè)置日志級(jí)別的過濾，實(shí)現(xiàn)日志的分級(jí)輸出。

# -*- coding: utf-8 -*- import logging import logging.handlers import osdef setup_logger(logger_name):# root_path = os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir))root_path = os.path.abspath(os.path.join(os.getcwd(), "../..")) # 與項(xiàng)目根目錄平級(jí)log_path = root_path + '/logs/' + logger_name + '.log'myapp = logging.getLogger(logger_name)myapp.setLevel(logging.INFO) # 先將INFO及以上的日志都添加到logger，再按照是否WARNING過濾是否輸出到文件formatter = logging.Formatter("%(asctime)s - %(filename)s - %(funcName)s[line:%(lineno)d] - %(levelname)s: %(message)s")rotatingHandler = logging.handlers.RotatingFileHandler(log_path, maxBytes=20 * 1024 * 1024, backupCount=10)rotatingHandler.setFormatter(formatter)myapp.addHandler(rotatingHandler)streamHandler = logging.StreamHandler()streamHandler.setFormatter(formatter)myapp.addHandler(streamHandler)# 過濾級(jí)別：控制臺(tái)輸出INFO和WARNING級(jí)別，文件只記錄WARNING級(jí)別info_filter = logging.Filter()info_filter.filter = lambda record: record.levelno < logging.WARNING # 設(shè)置過濾等級(jí)err_filter = logging.Filter()err_filter.filter = lambda record: record.levelno >= logging.WARNING# streamHandler.addFilter(info_filter)rotatingHandler.addFilter(err_filter)# 示例 def main():# setup_logger('log1', r'log1.log')# setup_logger('log2', r'log2.log')# log1 = logging.getLogger('log1')setup_logger('myapp')myapp = logging.getLogger('myapp')myapp.info("file test")myapp.warning("file warning")if __name__ == '__main__':main()# print(os.path.abspath(os.path.join(os.getcwd(), "../..")))

效果

控制臺(tái)輸出INFO和WARNING級(jí)別，文件只記錄WARNING級(jí)別

總結(jié)

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