{"id":1180539,"date":"2025-01-15T18:38:05","date_gmt":"2025-01-15T10:38:05","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1180539.html"},"modified":"2025-01-15T18:38:09","modified_gmt":"2025-01-15T10:38:09","slug":"python%e5%a6%82%e4%bd%95%e6%89%93%e5%8d%b0log%e6%96%87%e4%bb%b6%e5%86%85%e5%ae%b9","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1180539.html","title":{"rendered":"python\u5982\u4f55\u6253\u5370log\u6587\u4ef6\u5185\u5bb9"},"content":{"rendered":"

\"python\u5982\u4f55\u6253\u5370log\u6587\u4ef6\u5185\u5bb9\"<\/p>\n

\u8981\u5728Python\u4e2d\u6253\u5370\u65e5\u5fd7\u6587\u4ef6\u5185\u5bb9\uff0c\u53ef\u4ee5\u4f7f\u7528logging<\/code>\u6a21\u5757\u3001open<\/code>\u51fd\u6570\u8bfb\u53d6\u65e5\u5fd7\u6587\u4ef6\u5185\u5bb9\u3001\u4f7f\u7528\u7b2c\u4e09\u65b9\u5e93\u5982loguru<\/code>\uff0c\u4ee5\u53ca\u901a\u8fc7\u81ea\u5b9a\u4e49\u65e5\u5fd7\u5904\u7406\u51fd\u6570\u7b49\u65b9\u6cd5\u3002<\/strong> \u5176\u4e2d\uff0c\u4f7f\u7528logging<\/code>\u6a21\u5757\u7684\u65b9\u6cd5\u662f\u6700\u5e38\u89c1\u548c\u63a8\u8350\u7684\u3002\u4e0b\u9762\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u5b9e\u73b0\u8fd9\u4e00\u529f\u80fd\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528logging<\/code>\u6a21\u5757\u8bb0\u5f55\u548c\u6253\u5370\u65e5\u5fd7<\/h3>\n<\/p>\n

logging<\/code>\u6a21\u5757\u662fPython\u5185\u7f6e\u7684\u65e5\u5fd7\u6a21\u5757\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u8bb0\u5f55\u548c\u7ba1\u7406\u65e5\u5fd7\u4fe1\u606f\u3002<\/p>\n<\/p>\n

1\u3001\u914d\u7f6e\u57fa\u672c\u65e5\u5fd7\u8bbe\u7f6e<\/h4>\n<\/p>\n

\u9996\u5148\uff0c\u9700\u8981\u914d\u7f6e\u57fa\u672c\u7684\u65e5\u5fd7\u8bbe\u7f6e\uff0c\u6307\u5b9a\u65e5\u5fd7\u6587\u4ef6\u7684\u8def\u5f84\u548c\u65e5\u5fd7\u7ea7\u522b\u7b49\u3002<\/p>\n<\/p>\n

import logging<\/p>\n
\u914d\u7f6e\u65e5\u5fd7<\/strong><\/h2>\n
logging.basicConfig(filename='app.log', <\/p>\n
                    level=logging.DEBUG, <\/p>\n
                    format='%(asctime)s - %(levelname)s - %(message)s')<\/p>\n
\u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
logging.debug('This is a debug message')<\/p>\n
logging.info('This is an info message')<\/p>\n
logging.warning('This is a warning message')<\/p>\n
logging.error('This is an error message')<\/p>\n
logging.critical('This is a critical message')<\/p>\n
<\/code><\/pre>\n<\/p>\n
2\u3001\u8bfb\u53d6\u65e5\u5fd7\u6587\u4ef6\u5185\u5bb9\u5e76\u6253\u5370<\/h4>\n<\/p>\n
\u63a5\u4e0b\u6765\uff0c\u901a\u8fc7open<\/code>\u51fd\u6570\u8bfb\u53d6\u65e5\u5fd7\u6587\u4ef6\u7684\u5185\u5bb9\uff0c\u5e76\u6253\u5370\u51fa\u6765\u3002<\/p>\n<\/p>\n
# \u8bfb\u53d6\u65e5\u5fd7\u6587\u4ef6\u5185\u5bb9<\/p>\n
with open('app.log', 'r') as log_file:<\/p>\n
    log_content = log_file.read()<\/p>\n
\u6253\u5370\u65e5\u5fd7\u5185\u5bb9<\/strong><\/h2>\n
print(log_content)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528loguru<\/code>\u5e93\u8bb0\u5f55\u548c\u6253\u5370\u65e5\u5fd7<\/h3>\n<\/p>\n
loguru<\/code>\u662f\u4e00\u4e2a\u7b2c\u4e09\u65b9\u7684\u65e5\u5fd7\u5e93\uff0c\u76f8\u6bd4logging<\/code>\u6a21\u5757\uff0cloguru<\/code>\u63d0\u4f9b\u4e86\u66f4\u7b80\u6d01\u7684API\u548c\u66f4\u4e30\u5bcc\u7684\u529f\u80fd\u3002<\/p>\n<\/p>\n
1\u3001\u5b89\u88c5loguru<\/code>\u5e93<\/h4>\n<\/p>\n
pip install loguru<\/p>\n
<\/code><\/pre>\n<\/p>\n
2\u3001\u8bb0\u5f55\u548c\u6253\u5370\u65e5\u5fd7<\/h4>\n<\/p>\n
from loguru import logger<\/p>\n
\u914d\u7f6e\u65e5\u5fd7\u6587\u4ef6<\/strong><\/h2>\n
logger.add('app.log', format="{time} {level} {message}", level="DEBUG")<\/p>\n
\u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
logger.debug('This is a debug message')<\/p>\n
logger.info('This is an info message')<\/p>\n
logger.warning('This is a warning message')<\/p>\n
logger.error('This is an error message')<\/p>\n
logger.critical('This is a critical message')<\/p>\n
\u8bfb\u53d6\u65e5\u5fd7\u6587\u4ef6\u5185\u5bb9<\/strong><\/h2>\n
with open('app.log', 'r') as log_file:<\/p>\n
    log_content = log_file.read()<\/p>\n
\u6253\u5370\u65e5\u5fd7\u5185\u5bb9<\/strong><\/h2>\n
print(log_content)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u81ea\u5b9a\u4e49\u65e5\u5fd7\u5904\u7406\u51fd\u6570<\/h3>\n<\/p>\n
\u901a\u8fc7\u81ea\u5b9a\u4e49\u65e5\u5fd7\u5904\u7406\u51fd\u6570\uff0c\u53ef\u4ee5\u66f4\u7075\u6d3b\u5730\u5904\u7406\u548c\u6253\u5370\u65e5\u5fd7\u5185\u5bb9\u3002<\/p>\n<\/p>\n
1\u3001\u5b9a\u4e49\u81ea\u5b9a\u4e49\u65e5\u5fd7\u5904\u7406\u51fd\u6570<\/h4>\n<\/p>\n
import logging<\/p>\n
class CustomHandler(logging.Handler):<\/p>\n
    def __init__(self, filename):<\/p>\n
        logging.Handler.__init__(self)<\/p>\n
        self.filename = filename<\/p>\n
    def emit(self, record):<\/p>\n
        log_entry = self.format(record)<\/p>\n
        with open(self.filename, 'a') as log_file:<\/p>\n
            log_file.write(log_entry + '\\n')<\/p>\n
\u914d\u7f6e\u65e5\u5fd7<\/strong><\/h2>\n
logger = logging.getLogger(__name__)<\/p>\n
logger.setLevel(logging.DEBUG)<\/p>\n
handler = CustomHandler('custom_app.log')<\/p>\n
formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')<\/p>\n
handler.setFormatter(formatter)<\/p>\n
logger.addHandler(handler)<\/p>\n
\u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
logger.debug('This is a debug message')<\/p>\n
logger.info('This is an info message')<\/p>\n
logger.warning('This is a warning message')<\/p>\n
logger.error('This is an error message')<\/p>\n
logger.critical('This is a critical message')<\/p>\n
<\/code><\/pre>\n<\/p>\n
2\u3001\u8bfb\u53d6\u548c\u6253\u5370\u65e5\u5fd7\u5185\u5bb9<\/h4>\n<\/p>\n
# \u8bfb\u53d6\u65e5\u5fd7\u6587\u4ef6\u5185\u5bb9<\/p>\n
with open('custom_app.log', 'r') as log_file:<\/p>\n
    log_content = log_file.read()<\/p>\n
\u6253\u5370\u65e5\u5fd7\u5185\u5bb9<\/strong><\/h2>\n
print(log_content)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u65e5\u5fd7\u7ea7\u522b\u548c\u683c\u5f0f<\/h3>\n<\/p>\n
\u5728\u4f7f\u7528logging<\/code>\u6a21\u5757\u6216loguru<\/code>\u5e93\u65f6\uff0c\u4e86\u89e3\u65e5\u5fd7\u7ea7\u522b\u548c\u683c\u5f0f\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<\/p>\n
1\u3001\u65e5\u5fd7\u7ea7\u522b<\/h4>\n<\/p>\n
\u65e5\u5fd7\u7ea7\u522b\u7528\u4e8e\u6307\u5b9a\u65e5\u5fd7\u7684\u4e25\u91cd\u6027\uff0c\u4ece\u4f4e\u5230\u9ad8\u5206\u522b\u662f\uff1a<\/p>\n<\/p>\n
    \n
  • DEBUG: \u8c03\u8bd5\u4fe1\u606f<\/li>\n
  • INFO: \u666e\u901a\u4fe1\u606f<\/li>\n
  • WARNING: \u8b66\u544a\u4fe1\u606f<\/li>\n
  • ERROR: \u9519\u8bef\u4fe1\u606f<\/li>\n
  • CRITICAL: \u4e25\u91cd\u9519\u8bef\u4fe1\u606f<\/li>\n<\/ul>\n
    2\u3001\u65e5\u5fd7\u683c\u5f0f<\/h4>\n<\/p>\n
    \u65e5\u5fd7\u683c\u5f0f\u6307\u5b9a\u4e86\u65e5\u5fd7\u8bb0\u5f55\u7684\u7ed3\u6784\u548c\u5185\u5bb9\uff0c\u53ef\u4ee5\u5305\u542b\u65f6\u95f4\u3001\u65e5\u5fd7\u7ea7\u522b\u3001\u6d88\u606f\u7b49\u4fe1\u606f\u3002\u5e38\u89c1\u7684\u65e5\u5fd7\u683c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<\/p>\n
    format='%(asctime)s - %(levelname)s - %(message)s'<\/p>\n
    <\/code><\/pre>\n<\/p>\n
      \n
    • %(asctime)s<\/code>: \u8bb0\u5f55\u7684\u65f6\u95f4<\/li>\n
    • %(levelname)s<\/code>: \u65e5\u5fd7\u7ea7\u522b<\/li>\n
    • %(message)s<\/code>: \u65e5\u5fd7\u6d88\u606f<\/li>\n<\/ul>\n
      \u4e94\u3001\u65e5\u5fd7\u8f6e\u8f6c<\/h3>\n<\/p>\n
      \u5bf9\u4e8e\u957f\u671f\u8fd0\u884c\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u65e5\u5fd7\u6587\u4ef6\u53ef\u80fd\u4f1a\u53d8\u5f97\u975e\u5e38\u5927\uff0c\u6b64\u65f6\u53ef\u4ee5\u4f7f\u7528\u65e5\u5fd7\u8f6e\u8f6c\u529f\u80fd\uff0c\u5c06\u65e5\u5fd7\u6587\u4ef6\u6309\u5927\u5c0f\u6216\u65f6\u95f4\u8fdb\u884c\u5206\u5272\u3002<\/p>\n<\/p>\n
      1\u3001\u6309\u5927\u5c0f\u8f6e\u8f6c\u65e5\u5fd7<\/h4>\n<\/p>\n
      import logging<\/p>\n
      from logging.handlers import RotatingFileHandler<\/p>\n
      \u914d\u7f6e\u65e5\u5fd7\u8f6e\u8f6c<\/strong><\/h2>\n
      handler = RotatingFileHandler('app.log', maxBytes=2000, backupCount=5)<\/p>\n
      formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')<\/p>\n
      handler.setFormatter(formatter)<\/p>\n
      logger = logging.getLogger(__name__)<\/p>\n
      logger.setLevel(logging.DEBUG)<\/p>\n
      logger.addHandler(handler)<\/p>\n
      \u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
      for i in range(100):<\/p>\n
          logger.debug(f'This is debug message {i}')<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      2\u3001\u6309\u65f6\u95f4\u8f6e\u8f6c\u65e5\u5fd7<\/h4>\n<\/p>\n
      import logging<\/p>\n
      from logging.handlers import TimedRotatingFileHandler<\/p>\n
      \u914d\u7f6e\u65e5\u5fd7\u8f6e\u8f6c<\/strong><\/h2>\n
      handler = TimedRotatingFileHandler('app.log', when='midnight', interval=1, backupCount=7)<\/p>\n
      formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')<\/p>\n
      handler.setFormatter(formatter)<\/p>\n
      logger = logging.getLogger(__name__)<\/p>\n
      logger.setLevel(logging.DEBUG)<\/p>\n
      logger.addHandler(handler)<\/p>\n
      \u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
      for i in range(100):<\/p>\n
          logger.debug(f'This is debug message {i}')<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u516d\u3001\u5c06\u65e5\u5fd7\u8f93\u51fa\u5230\u63a7\u5236\u53f0\u548c\u6587\u4ef6<\/h3>\n<\/p>\n
      \u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\uff0c\u6709\u65f6\u9700\u8981\u540c\u65f6\u5c06\u65e5\u5fd7\u8f93\u51fa\u5230\u63a7\u5236\u53f0\u548c\u6587\u4ef6\uff0c\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u591a\u4e2a\u65e5\u5fd7\u5904\u7406\u5668\u5b9e\u73b0\u3002<\/p>\n<\/p>\n
      import logging<\/p>\n
      \u914d\u7f6e\u6587\u4ef6\u65e5\u5fd7\u5904\u7406\u5668<\/strong><\/h2>\n
      file_handler = logging.FileHandler('app.log')<\/p>\n
      file_handler.setLevel(logging.DEBUG)<\/p>\n
      file_formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')<\/p>\n
      file_handler.setFormatter(file_formatter)<\/p>\n
      \u914d\u7f6e\u63a7\u5236\u53f0\u65e5\u5fd7\u5904\u7406\u5668<\/strong><\/h2>\n
      console_handler = logging.StreamHandler()<\/p>\n
      console_handler.setLevel(logging.DEBUG)<\/p>\n
      console_formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')<\/p>\n
      console_handler.setFormatter(console_formatter)<\/p>\n
      \u914d\u7f6e\u65e5\u5fd7<\/strong><\/h2>\n
      logger = logging.getLogger(__name__)<\/p>\n
      logger.setLevel(logging.DEBUG)<\/p>\n
      logger.addHandler(file_handler)<\/p>\n
      logger.addHandler(console_handler)<\/p>\n
      \u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
      logger.debug('This is a debug message')<\/p>\n
      logger.info('This is an info message')<\/p>\n
      logger.warning('This is a warning message')<\/p>\n
      logger.error('This is an error message')<\/p>\n
      logger.critical('This is a critical message')<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u4e03\u3001\u65e5\u5fd7\u7684\u9ad8\u7ea7\u914d\u7f6e<\/h3>\n<\/p>\n
      \u5bf9\u4e8e\u590d\u6742\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u53ef\u4ee5\u4f7f\u7528\u914d\u7f6e\u6587\u4ef6\u6216\u5b57\u5178\u914d\u7f6e\u65e5\u5fd7\uff0c\u4ee5\u4fbf\u66f4\u7075\u6d3b\u5730\u7ba1\u7406\u65e5\u5fd7\u8bbe\u7f6e\u3002<\/p>\n<\/p>\n
      1\u3001\u4f7f\u7528\u914d\u7f6e\u6587\u4ef6\u914d\u7f6e\u65e5\u5fd7<\/h4>\n<\/p>\n
      import logging.config<\/p>\n
      \u914d\u7f6e\u6587\u4ef6\u5185\u5bb9<\/strong><\/h2>\n
      config = """<\/p>\n
      [loggers]<\/p>\n
      keys=root<\/p>\n
      [handlers]<\/p>\n
      keys=fileHandler,consoleHandler<\/p>\n
      [formatters]<\/p>\n
      keys=simpleFormatter<\/p>\n
      [logger_root]<\/p>\n
      level=DEBUG<\/p>\n
      handlers=fileHandler,consoleHandler<\/p>\n
      [handler_fileHandler]<\/p>\n
      class=FileHandler<\/p>\n
      level=DEBUG<\/p>\n
      formatter=simpleFormatter<\/p>\n
      args=('app.log', 'a')<\/p>\n
      [handler_consoleHandler]<\/p>\n
      class=StreamHandler<\/p>\n
      level=DEBUG<\/p>\n
      formatter=simpleFormatter<\/p>\n
      args=(sys.stdout,)<\/p>\n
      [formatter_simpleFormatter]<\/p>\n
      format=%(asctime)s - %(levelname)s - %(message)s<\/p>\n
      datefmt=<\/p>\n
      """<\/p>\n
      \u5199\u5165\u914d\u7f6e\u6587\u4ef6<\/strong><\/h2>\n
      with open('logging.conf', 'w') as config_file:<\/p>\n
          config_file.write(config)<\/p>\n
      \u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6<\/strong><\/h2>\n
      logging.config.fileConfig('logging.conf')<\/p>\n
      \u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
      logger = logging.getLogger()<\/p>\n
      logger.debug('This is a debug message')<\/p>\n
      logger.info('This is an info message')<\/p>\n
      logger.warning('This is a warning message')<\/p>\n
      logger.error('This is an error message')<\/p>\n
      logger.critical('This is a critical message')<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      2\u3001\u4f7f\u7528\u5b57\u5178\u914d\u7f6e\u65e5\u5fd7<\/h4>\n<\/p>\n
      import logging.config<\/p>\n
      \u914d\u7f6e\u5b57\u5178<\/strong><\/h2>\n
      config = {<\/p>\n
          'version': 1,<\/p>\n
          'formatters': {<\/p>\n
              'simple': {<\/p>\n
                  'format': '%(asctime)s - %(levelname)s - %(message)s'<\/p>\n
              },<\/p>\n
          },<\/p>\n
          'handlers': {<\/p>\n
              'file': {<\/p>\n
                  'class': 'logging.FileHandler',<\/p>\n
                  'level': 'DEBUG',<\/p>\n
                  'formatter': 'simple',<\/p>\n
                  'filename': 'app.log',<\/p>\n
              },<\/p>\n
              'console': {<\/p>\n
                  'class': 'logging.StreamHandler',<\/p>\n
                  'level': 'DEBUG',<\/p>\n
                  'formatter': 'simple',<\/p>\n
              },<\/p>\n
          },<\/p>\n
          'root': {<\/p>\n
              'level': 'DEBUG',<\/p>\n
              'handlers': ['file', 'console']<\/p>\n
          },<\/p>\n
      }<\/p>\n
      \u52a0\u8f7d\u914d\u7f6e\u5b57\u5178<\/strong><\/h2>\n
      logging.config.dictConfig(config)<\/p>\n
      \u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
      logger = logging.getLogger()<\/p>\n
      logger.debug('This is a debug message')<\/p>\n
      logger.info('This is an info message')<\/p>\n
      logger.warning('This is a warning message')<\/p>\n
      logger.error('This is an error message')<\/p>\n
      logger.critical('This is a critical message')<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u516b\u3001\u65e5\u5fd7\u7684\u6027\u80fd\u4f18\u5316<\/h3>\n<\/p>\n
      \u5728\u9ad8\u6027\u80fd\u5e94\u7528\u4e2d\uff0c\u65e5\u5fd7\u8bb0\u5f55\u53ef\u80fd\u6210\u4e3a\u6027\u80fd\u74f6\u9888\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u4f18\u5316\u65e5\u5fd7\u6027\u80fd\uff1a<\/p>\n<\/p>\n
      1\u3001\u5f02\u6b65\u65e5\u5fd7<\/h4>\n<\/p>\n
      \u4f7f\u7528\u7b2c\u4e09\u65b9\u5e93concurrent-log-handler<\/code>\u6216logging.handlers.QueueHandler<\/code>\u5b9e\u73b0\u5f02\u6b65\u65e5\u5fd7\u3002<\/p>\n<\/p>\n
      import logging<\/p>\n
      from logging.handlers import QueueHandler, QueueListener<\/p>\n
      import queue<\/p>\n
      \u521b\u5efa\u65e5\u5fd7\u961f\u5217<\/strong><\/h2>\n
      log_queue = queue.Queue()<\/p>\n
      \u914d\u7f6e\u6587\u4ef6\u65e5\u5fd7\u5904\u7406\u5668<\/strong><\/h2>\n
      file_handler = logging.FileHandler('app.log')<\/p>\n
      file_handler.setLevel(logging.DEBUG)<\/p>\n
      file_formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')<\/p>\n
      file_handler.setFormatter(file_formatter)<\/p>\n
      \u914d\u7f6e\u65e5\u5fd7\u5904\u7406\u5668<\/strong><\/h2>\n
      queue_handler = QueueHandler(log_queue)<\/p>\n
      queue_listener = QueueListener(log_queue, file_handler)<\/p>\n
      queue_listener.start()<\/p>\n
      \u914d\u7f6e\u65e5\u5fd7<\/strong><\/h2>\n
      logger = logging.getLogger(__name__)<\/p>\n
      logger.setLevel(logging.DEBUG)<\/p>\n
      logger.addHandler(queue_handler)<\/p>\n
      \u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
      logger.debug('This is a debug message')<\/p>\n
      logger.info('This is an info message')<\/p>\n
      logger.warning('This is a warning message')<\/p>\n
      logger.error('This is an error message')<\/p>\n
      logger.critical('This is a critical message')<\/p>\n
      \u505c\u6b62\u961f\u5217\u76d1\u542c<\/strong><\/h2>\n
      queue_listener.stop()<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      2\u3001\u6279\u91cf\u5199\u5165\u65e5\u5fd7<\/h4>\n<\/p>\n
      \u901a\u8fc7\u6279\u91cf\u5199\u5165\u65e5\u5fd7\uff0c\u51cf\u5c11\u78c1\u76d8I\/O\u64cd\u4f5c\uff0c\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n<\/p>\n
      import logging<\/p>\n
      class BatchHandler(logging.Handler):<\/p>\n
          def __init__(self, filename, batch_size=10):<\/p>\n
              logging.Handler.__init__(self)<\/p>\n
              self.filename = filename<\/p>\n
              self.batch_size = batch_size<\/p>\n
              self.buffer = []<\/p>\n
          def emit(self, record):<\/p>\n
              log_entry = self.format(record)<\/p>\n
              self.buffer.append(log_entry)<\/p>\n
              if len(self.buffer) >= self.batch_size:<\/p>\n
                  self.flush()<\/p>\n
          def flush(self):<\/p>\n
              with open(self.filename, 'a') as log_file:<\/p>\n
                  for entry in self.buffer:<\/p>\n
                      log_file.write(entry + '\\n')<\/p>\n
              self.buffer = []<\/p>\n
      \u914d\u7f6e\u65e5\u5fd7<\/strong><\/h2>\n
      logger = logging.getLogger(__name__)<\/p>\n
      logger.setLevel(logging.DEBUG)<\/p>\n
      batch_handler = BatchHandler('batch_app.log', batch_size=10)<\/p>\n
      formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')<\/p>\n
      batch_handler.setFormatter(formatter)<\/p>\n
      logger.addHandler(batch_handler)<\/p>\n
      \u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
      for i in range(100):<\/p>\n
          logger.debug(f'This is debug message {i}')<\/p>\n
      \u624b\u52a8\u5237\u65b0\u5269\u4f59\u65e5\u5fd7<\/strong><\/h2>\n
      batch_handler.flush()<\/p>\n
      <\/code><\/pre>\n<\/p>\n
      \u4e5d\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
      \u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\uff0c\u6211\u4eec\u4e86\u89e3\u4e86\u5982\u4f55\u5728Python\u4e2d\u8bb0\u5f55\u548c\u6253\u5370\u65e5\u5fd7\u6587\u4ef6\u5185\u5bb9\uff0c\u5305\u62ec\u4f7f\u7528logging<\/code>\u6a21\u5757\u3001loguru<\/code>\u5e93\u3001\u81ea\u5b9a\u4e49\u65e5\u5fd7\u5904\u7406\u51fd\u6570\u7b49\u65b9\u6cd5\u3002\u540c\u65f6\uff0c\u4ecb\u7ecd\u4e86\u65e5\u5fd7\u7ea7\u522b\u548c\u683c\u5f0f\u3001\u65e5\u5fd7\u8f6e\u8f6c\u3001\u5c06\u65e5\u5fd7\u8f93\u51fa\u5230\u63a7\u5236\u53f0\u548c\u6587\u4ef6\u3001\u65e5\u5fd7\u7684\u9ad8\u7ea7\u914d\u7f6e\u548c\u6027\u80fd\u4f18\u5316\u7b49\u5185\u5bb9\u3002\u8fd9\u4e9b\u65b9\u6cd5\u548c\u6280\u5de7\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u66f4\u597d\u5730\u7ba1\u7406\u548c\u8c03\u8bd5\u5e94\u7528\u7a0b\u5e8f\uff0c\u63d0\u9ad8\u5f00\u53d1\u6548\u7387\u548c\u4ee3\u7801\u8d28\u91cf\u3002<\/p>\n<\/p>\n
      \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
       \u5982\u4f55\u4f7f\u7528Python\u8bfb\u53d6\u548c\u6253\u5370log\u6587\u4ef6\u5185\u5bb9\uff1f<\/strong>
      \u4f7f\u7528Python\u8bfb\u53d6log\u6587\u4ef6\u975e\u5e38\u7b80\u5355\u3002\u53ef\u4ee5\u901a\u8fc7\u5185\u7f6e\u7684\u6587\u4ef6\u64cd\u4f5c\u6765\u5b9e\u73b0\u3002\u901a\u5e38\uff0c\u4f7f\u7528open()<\/code>\u51fd\u6570\u6253\u5f00\u6587\u4ef6\uff0c\u7136\u540e\u901a\u8fc7read()<\/code>\u6216readlines()<\/code>\u65b9\u6cd5\u8bfb\u53d6\u5185\u5bb9\uff0c\u6700\u540e\u6253\u5370\u51fa\u6765\u3002\u4f8b\u5982\uff1a  <\/p>\n
      with open('your_log_file.log', 'r') as file:\n    content = file.read()\n    print(content)\n<\/code><\/pre>\n
      \u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5c06\u6574\u4e2a\u6587\u4ef6\u7684\u5185\u5bb9\u4e00\u6b21\u6027\u8bfb\u53d6\u5e76\u6253\u5370\u3002<\/p>\n
      Python\u4e2d\u662f\u5426\u6709\u5e93\u53ef\u4ee5\u5e2e\u52a9\u7ba1\u7406log\u6587\u4ef6\uff1f<\/strong>
      \u662f\u7684\uff0cPython\u7684logging<\/code>\u6a21\u5757\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4f60\u7ba1\u7406\u548c\u6253\u5370log\u4fe1\u606f\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u6a21\u5757\u6765\u8bbe\u7f6e\u4e0d\u540c\u7684\u65e5\u5fd7\u7ea7\u522b\u3001\u683c\u5f0f\u5316\u8f93\u51fa\u4ee5\u53ca\u5c06\u65e5\u5fd7\u8f93\u51fa\u5230\u6587\u4ef6\u6216\u63a7\u5236\u53f0\u3002\u4f8b\u5982\uff1a  <\/p>\n
      import logging\n\nlogging.basicConfig(filename='your_log_file.log', level=logging.DEBUG)\nlogging.debug('\u8fd9\u662f\u4e00\u6761\u8c03\u8bd5\u4fe1\u606f')\n<\/code><\/pre>\n
      \u8fd9\u6837\uff0c\u4f60\u53ef\u4ee5\u7075\u6d3b\u5730\u63a7\u5236\u65e5\u5fd7\u8f93\u51fa\u3002<\/p>\n
      \u5982\u4f55\u4ecelog\u6587\u4ef6\u4e2d\u7b5b\u9009\u7279\u5b9a\u4fe1\u606f\uff1f<\/strong>
      \u5982\u679c\u4f60\u53ea\u60f3\u6253\u5370log\u6587\u4ef6\u4e2d\u5305\u542b\u7279\u5b9a\u5173\u952e\u5b57\u7684\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u6761\u4ef6\u8bed\u53e5\u6765\u5b9e\u73b0\u3002\u53ef\u4ee5\u8bfb\u53d6\u6587\u4ef6\u7684\u6bcf\u4e00\u884c\uff0c\u5e76\u5224\u65ad\u662f\u5426\u5305\u542b\u6240\u9700\u7684\u5173\u952e\u5b57\u3002\u4f8b\u5982\uff1a  <\/p>\n
      keyword = 'ERROR'\nwith open('your_log_file.log', 'r') as file:\n    for line in file:\n        if keyword in line:\n            print(line)\n<\/code><\/pre>\n
      \u8fd9\u79cd\u65b9\u5f0f\u80fd\u591f\u5e2e\u52a9\u4f60\u5feb\u901f\u7b5b\u9009\u51fa\u76f8\u5173\u7684\u4fe1\u606f\uff0c\u63d0\u9ad8\u65e5\u5fd7\u5206\u6790\u7684\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u8981\u5728Python\u4e2d\u6253\u5370\u65e5\u5fd7\u6587\u4ef6\u5185\u5bb9\uff0c\u53ef\u4ee5\u4f7f\u7528logging\u6a21\u5757\u3001open\u51fd\u6570\u8bfb\u53d6\u65e5\u5fd7\u6587\u4ef6\u5185\u5bb9\u3001\u4f7f\u7528\u7b2c\u4e09\u65b9\u5e93\u5982l […]","protected":false},"author":3,"featured_media":1180554,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1180539"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1180539"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1180539\/revisions"}],"predecessor-version":[{"id":1180556,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1180539\/revisions\/1180556"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1180554"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1180539"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1180539"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1180539"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}