{"id":973405,"date":"2024-12-27T05:56:41","date_gmt":"2024-12-26T21:56:41","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/973405.html"},"modified":"2024-12-27T05:56:43","modified_gmt":"2024-12-26T21:56:43","slug":"%e5%a6%82%e4%bd%95%e6%9f%a5%e7%9c%8bpython%e7%a8%8b%e5%ba%8f%e6%97%a5%e5%bf%97","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/973405.html","title":{"rendered":"\u5982\u4f55\u67e5\u770bpython\u7a0b\u5e8f\u65e5\u5fd7"},"content":{"rendered":"

\"\u5982\u4f55\u67e5\u770bpython\u7a0b\u5e8f\u65e5\u5fd7\"<\/p>\n

\u8981\u67e5\u770bPython\u7a0b\u5e8f\u65e5\u5fd7\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684logging<\/code>\u6a21\u5757\u3001\u901a\u8fc7\u8bbe\u7f6e\u4e0d\u540c\u7684\u65e5\u5fd7\u7ea7\u522b\u6765\u63a7\u5236\u8f93\u51fa\u3001\u5c06\u65e5\u5fd7\u8f93\u51fa\u5230\u6587\u4ef6\u4e2d\u4ee5\u4fbf\u4e8e\u540e\u7eed\u67e5\u770b\u3002<\/strong> \u5176\u4e2d\uff0c\u4f7f\u7528logging<\/code>\u6a21\u5757\u662f\u6700\u5e38\u89c1\u7684\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u63d0\u4f9b\u4e86\u7075\u6d3b\u800c\u5f3a\u5927\u7684\u65e5\u5fd7\u8bb0\u5f55\u529f\u80fd\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u65e5\u5fd7\u8bb0\u5f55\u5668\uff08logger\uff09\u6765\u63a7\u5236\u65e5\u5fd7\u7684\u683c\u5f0f\u548c\u8f93\u51fa\u4f4d\u7f6e\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528logging<\/code>\u6a21\u5757\u6765\u67e5\u770b\u548c\u7ba1\u7406Python\u7a0b\u5e8f\u7684\u65e5\u5fd7\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528LOGGING\u6a21\u5757\u8bbe\u7f6e\u65e5\u5fd7<\/h3>\n<\/p>\n

Python\u7684logging<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u79cd\u901a\u7528\u7684\u65e5\u5fd7\u7cfb\u7edf\uff0c\u5b83\u53ef\u4ee5\u5f88\u65b9\u4fbf\u5730\u5e2e\u52a9\u6211\u4eec\u8bb0\u5f55\u7a0b\u5e8f\u7684\u8fd0\u884c\u8fc7\u7a0b\u3001\u9519\u8bef\u4fe1\u606f\u4ee5\u53ca\u5176\u4ed6\u91cd\u8981\u7684\u8c03\u8bd5\u4fe1\u606f\u3002<\/p>\n<\/p>\n

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

\u8981\u5feb\u901f\u914d\u7f6e\u65e5\u5fd7\u8bb0\u5f55\uff0c\u53ef\u4ee5\u4f7f\u7528logging.basicConfig()<\/code>\u65b9\u6cd5\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u7b80\u5355\u7684\u65e5\u5fd7\u8bb0\u5f55\u9700\u6c42\u3002<\/p>\n<\/p>\n

import logging<\/p>\n
\u914d\u7f6e\u57fa\u672c\u7684\u65e5\u5fd7\u4fe1\u606f<\/strong><\/h2>\n
logging.basicConfig(level=logging.DEBUG,<\/p>\n
                    format='%(asctime)s - %(levelname)s - %(message)s')<\/p>\n
\u8bb0\u5f55\u4e0d\u540c\u7ea7\u522b\u7684\u65e5\u5fd7<\/strong><\/h2>\n
logging.debug('\u8fd9\u662f\u4e00\u4e2a\u8c03\u8bd5\u6d88\u606f')<\/p>\n
logging.info('\u8fd9\u662f\u4e00\u4e2a\u4fe1\u606f\u6d88\u606f')<\/p>\n
logging.warning('\u8fd9\u662f\u4e00\u4e2a\u8b66\u544a\u6d88\u606f')<\/p>\n
logging.error('\u8fd9\u662f\u4e00\u4e2a\u9519\u8bef\u6d88\u606f')<\/p>\n
logging.critical('\u8fd9\u662f\u4e00\u4e2a\u4e25\u91cd\u9519\u8bef\u6d88\u606f')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528basicConfig<\/code>\u65b9\u6cd5\u914d\u7f6e\u4e86\u65e5\u5fd7\u7684\u8f93\u51fa\u683c\u5f0f\u548c\u7ea7\u522b\u3002level<\/code>\u53c2\u6570\u8bbe\u7f6e\u6700\u4f4e\u7ea7\u522b\u7684\u65e5\u5fd7\u6d88\u606f\uff0c\u4f4e\u4e8e\u6b64\u7ea7\u522b\u7684\u65e5\u5fd7\u6d88\u606f\u5c06\u88ab\u5ffd\u7565\u3002format<\/code>\u53c2\u6570\u5b9a\u4e49\u4e86\u65e5\u5fd7\u6d88\u606f\u7684\u683c\u5f0f\u3002<\/p>\n<\/p>\n
1.2\u3001\u65e5\u5fd7\u7ea7\u522b<\/h4>\n<\/p>\n
logging<\/code>\u6a21\u5757\u5b9a\u4e49\u4e86\u591a\u4e2a\u65e5\u5fd7\u7ea7\u522b\uff08\u4ece\u4f4e\u5230\u9ad8\uff09\uff1aDEBUG<\/code>\u3001INFO<\/code>\u3001WARNING<\/code>\u3001ERROR<\/code>\u3001CRITICAL<\/code>\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0clogging<\/code>\u6a21\u5757\u53ea\u4f1a\u5904\u7406\u7ea7\u522b\u4e3aWARNING<\/code>\u53ca\u4ee5\u4e0a\u7684\u6d88\u606f\uff0c\u4f46\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u914d\u7f6e\u6765\u6539\u53d8\u8fd9\u4e00\u884c\u4e3a\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u5c06\u65e5\u5fd7\u8f93\u51fa\u5230\u6587\u4ef6<\/h3>\n<\/p>\n
\u4e3a\u4fbf\u4e8e\u540e\u7eed\u5206\u6790\u548c\u67e5\u770b\uff0c\u53ef\u4ee5\u5c06\u65e5\u5fd7\u8f93\u51fa\u5230\u6587\u4ef6\u4e2d\u3002logging<\/code>\u6a21\u5757\u5141\u8bb8\u6211\u4eec\u5c06\u65e5\u5fd7\u5199\u5165\u6587\u4ef6\uff0c\u8fd9\u5728\u8c03\u8bd5\u548c\u751f\u4ea7\u73af\u5883\u4e2d\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n
2.1\u3001\u5c06\u65e5\u5fd7\u8f93\u51fa\u5230\u6587\u4ef6<\/h4>\n<\/p>\n
\u8981\u5c06\u65e5\u5fd7\u8f93\u51fa\u5230\u6587\u4ef6\uff0c\u53ef\u4ee5\u5728basicConfig<\/code>\u4e2d\u4f7f\u7528filename<\/code>\u53c2\u6570\u3002<\/p>\n<\/p>\n
import logging<\/p>\n
\u5c06\u65e5\u5fd7\u8f93\u51fa\u5230\u6587\u4ef6<\/strong><\/h2>\n
logging.basicConfig(filename='app.log', level=logging.DEBUG,<\/p>\n
                    format='%(asctime)s - %(levelname)s - %(message)s')<\/p>\n
logging.debug('\u8fd9\u662f\u4e00\u4e2a\u8c03\u8bd5\u6d88\u606f')<\/p>\n
logging.info('\u8fd9\u662f\u4e00\u4e2a\u4fe1\u606f\u6d88\u606f')<\/p>\n
logging.warning('\u8fd9\u662f\u4e00\u4e2a\u8b66\u544a\u6d88\u606f')<\/p>\n
logging.error('\u8fd9\u662f\u4e00\u4e2a\u9519\u8bef\u6d88\u606f')<\/p>\n
logging.critical('\u8fd9\u662f\u4e00\u4e2a\u4e25\u91cd\u9519\u8bef\u6d88\u606f')<\/p>\n
<\/code><\/pre>\n<\/p>\n
2.2\u3001\u4f7f\u7528\u591a\u4e2a\u5904\u7406\u5668<\/h4>\n<\/p>\n
\u5982\u679c\u9700\u8981\u540c\u65f6\u5c06\u65e5\u5fd7\u8f93\u51fa\u5230\u63a7\u5236\u53f0\u548c\u6587\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528logging<\/code>\u6a21\u5757\u4e2d\u7684\u5904\u7406\u5668\uff08Handler\uff09\u6765\u5b9e\u73b0\u3002\u5e38\u7528\u7684\u5904\u7406\u5668\u5305\u62ecStreamHandler<\/code>\uff08\u7528\u4e8e\u8f93\u51fa\u5230\u63a7\u5236\u53f0\uff09\u548cFileHandler<\/code>\uff08\u7528\u4e8e\u8f93\u51fa\u5230\u6587\u4ef6\uff09\u3002<\/p>\n<\/p>\n
import logging<\/p>\n
\u521b\u5efa\u4e00\u4e2a\u65e5\u5fd7\u8bb0\u5f55\u5668<\/strong><\/h2>\n
logger = logging.getLogger()<\/p>\n
logger.setLevel(logging.DEBUG)<\/p>\n
\u521b\u5efa\u4e00\u4e2a\u63a7\u5236\u53f0\u5904\u7406\u5668\u5e76\u8bbe\u7f6e\u7ea7\u522b<\/strong><\/h2>\n
console_handler = logging.StreamHandler()<\/p>\n
console_handler.setLevel(logging.DEBUG)<\/p>\n
\u521b\u5efa\u4e00\u4e2a\u6587\u4ef6\u5904\u7406\u5668\u5e76\u8bbe\u7f6e\u7ea7\u522b<\/strong><\/h2>\n
file_handler = logging.FileHandler('app.log')<\/p>\n
file_handler.setLevel(logging.DEBUG)<\/p>\n
\u5b9a\u4e49\u65e5\u5fd7\u683c\u5f0f<\/strong><\/h2>\n
formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')<\/p>\n
\u8bbe\u7f6e\u5904\u7406\u5668\u7684\u683c\u5f0f<\/strong><\/h2>\n
console_handler.setFormatter(formatter)<\/p>\n
file_handler.setFormatter(formatter)<\/p>\n
\u5c06\u5904\u7406\u5668\u6dfb\u52a0\u5230\u65e5\u5fd7\u8bb0\u5f55\u5668<\/strong><\/h2>\n
logger.addHandler(console_handler)<\/p>\n
logger.addHandler(file_handler)<\/p>\n
\u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
logger.debug('\u8fd9\u662f\u4e00\u4e2a\u8c03\u8bd5\u6d88\u606f')<\/p>\n
logger.info('\u8fd9\u662f\u4e00\u4e2a\u4fe1\u606f\u6d88\u606f')<\/p>\n
logger.warning('\u8fd9\u662f\u4e00\u4e2a\u8b66\u544a\u6d88\u606f')<\/p>\n
logger.error('\u8fd9\u662f\u4e00\u4e2a\u9519\u8bef\u6d88\u606f')<\/p>\n
logger.critical('\u8fd9\u662f\u4e00\u4e2a\u4e25\u91cd\u9519\u8bef\u6d88\u606f')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u65e5\u5fd7\u683c\u5f0f\u5316\u548c\u8bb0\u5f55\u5668<\/h3>\n<\/p>\n
logging<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u7075\u6d3b\u7684\u65e5\u5fd7\u683c\u5f0f\u5316\u9009\u9879\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u81ea\u5b9a\u4e49\u65e5\u5fd7\u8f93\u51fa\u7684\u683c\u5f0f\u3002<\/p>\n<\/p>\n
3.1\u3001\u81ea\u5b9a\u4e49\u65e5\u5fd7\u683c\u5f0f<\/h4>\n<\/p>\n
\u901a\u8fc7Formatter<\/code>\u7c7b\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u65e5\u5fd7\u6d88\u606f\u7684\u683c\u5f0f\u3002<\/p>\n<\/p>\n
import logging<\/p>\n
\u81ea\u5b9a\u4e49\u65e5\u5fd7\u683c\u5f0f<\/strong><\/h2>\n
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')<\/p>\n
\u521b\u5efa\u4e00\u4e2a\u65e5\u5fd7\u8bb0\u5f55\u5668<\/strong><\/h2>\n
logger = logging.getLogger('MyLogger')<\/p>\n
logger.setLevel(logging.DEBUG)<\/p>\n
\u521b\u5efa\u4e00\u4e2a\u63a7\u5236\u53f0\u5904\u7406\u5668\u5e76\u8bbe\u7f6e\u7ea7\u522b<\/strong><\/h2>\n
console_handler = logging.StreamHandler()<\/p>\n
console_handler.setLevel(logging.DEBUG)<\/p>\n
\u8bbe\u7f6e\u5904\u7406\u5668\u7684\u683c\u5f0f<\/strong><\/h2>\n
console_handler.setFormatter(formatter)<\/p>\n
\u5c06\u5904\u7406\u5668\u6dfb\u52a0\u5230\u65e5\u5fd7\u8bb0\u5f55\u5668<\/strong><\/h2>\n
logger.addHandler(console_handler)<\/p>\n
\u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
logger.debug('\u8fd9\u662f\u4e00\u4e2a\u8c03\u8bd5\u6d88\u606f')<\/p>\n
logger.info('\u8fd9\u662f\u4e00\u4e2a\u4fe1\u606f\u6d88\u606f')<\/p>\n
logger.warning('\u8fd9\u662f\u4e00\u4e2a\u8b66\u544a\u6d88\u606f')<\/p>\n
logger.error('\u8fd9\u662f\u4e00\u4e2a\u9519\u8bef\u6d88\u606f')<\/p>\n
logger.critical('\u8fd9\u662f\u4e00\u4e2a\u4e25\u91cd\u9519\u8bef\u6d88\u606f')<\/p>\n
<\/code><\/pre>\n<\/p>\n
3.2\u3001\u4f7f\u7528\u4e0d\u540c\u7684\u65e5\u5fd7\u8bb0\u5f55\u5668<\/h4>\n<\/p>\n
\u5728\u590d\u6742\u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u53ef\u4ee5\u5b9a\u4e49\u591a\u4e2a\u65e5\u5fd7\u8bb0\u5f55\u5668\u6765\u5904\u7406\u4e0d\u540c\u7684\u65e5\u5fd7\u9700\u6c42\u3002<\/p>\n<\/p>\n
import logging<\/p>\n
\u521b\u5efa\u65e5\u5fd7\u8bb0\u5f55\u5668<\/strong><\/h2>\n
app_logger = logging.getLogger('AppLogger')<\/p>\n
app_logger.setLevel(logging.DEBUG)<\/p>\n
db_logger = logging.getLogger('DBLogger')<\/p>\n
db_logger.setLevel(logging.INFO)<\/p>\n
\u521b\u5efa\u63a7\u5236\u53f0\u5904\u7406\u5668\u5e76\u8bbe\u7f6e\u7ea7\u522b<\/strong><\/h2>\n
console_handler = logging.StreamHandler()<\/p>\n
console_handler.setLevel(logging.DEBUG)<\/p>\n
\u5b9a\u4e49\u65e5\u5fd7\u683c\u5f0f<\/strong><\/h2>\n
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')<\/p>\n
console_handler.setFormatter(formatter)<\/p>\n
\u5c06\u5904\u7406\u5668\u6dfb\u52a0\u5230\u65e5\u5fd7\u8bb0\u5f55\u5668<\/strong><\/h2>\n
app_logger.addHandler(console_handler)<\/p>\n
db_logger.addHandler(console_handler)<\/p>\n
\u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
app_logger.debug('\u5e94\u7528\u7a0b\u5e8f\u65e5\u5fd7 - \u8c03\u8bd5\u6d88\u606f')<\/p>\n
db_logger.info('\u6570\u636e\u5e93\u65e5\u5fd7 - \u4fe1\u606f\u6d88\u606f')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u65e5\u5fd7\u8f6e\u8f6c\u548c\u9ad8\u7ea7\u914d\u7f6e<\/h3>\n<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u65e5\u5fd7\u6587\u4ef6\u53ef\u80fd\u4f1a\u53d8\u5f97\u975e\u5e38\u5927\u3002\u4e3a\u4e86\u907f\u514d\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u4f7f\u7528\u65e5\u5fd7\u8f6e\u8f6c\u6280\u672f\u3002<\/p>\n<\/p>\n
4.1\u3001\u4f7f\u7528RotatingFileHandler<\/h4>\n<\/p>\n
RotatingFileHandler<\/code>\u53ef\u4ee5\u8ba9\u65e5\u5fd7\u6587\u4ef6\u5728\u8fbe\u5230\u6307\u5b9a\u5927\u5c0f\u65f6\u8fdb\u884c\u8f6e\u8f6c\u3002<\/p>\n<\/p>\n
import logging<\/p>\n
from logging.handlers import RotatingFileHandler<\/p>\n
\u521b\u5efa\u4e00\u4e2a\u65e5\u5fd7\u8bb0\u5f55\u5668<\/strong><\/h2>\n
logger = logging.getLogger('RotatingLogger')<\/p>\n
logger.setLevel(logging.DEBUG)<\/p>\n
\u521b\u5efa\u4e00\u4e2a\u8f6e\u8f6c\u6587\u4ef6\u5904\u7406\u5668<\/strong><\/h2>\n
rotating_handler = RotatingFileHandler('rotating_app.log', maxBytes=2000, backupCount=5)<\/p>\n
rotating_handler.setLevel(logging.DEBUG)<\/p>\n
\u5b9a\u4e49\u65e5\u5fd7\u683c\u5f0f<\/strong><\/h2>\n
formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')<\/p>\n
rotating_handler.setFormatter(formatter)<\/p>\n
\u5c06\u5904\u7406\u5668\u6dfb\u52a0\u5230\u65e5\u5fd7\u8bb0\u5f55\u5668<\/strong><\/h2>\n
logger.addHandler(rotating_handler)<\/p>\n
\u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
for i in range(100):<\/p>\n
    logger.debug(f'\u8fd9\u662f\u7b2c{i}\u6761\u8c03\u8bd5\u6d88\u606f')<\/p>\n
<\/code><\/pre>\n<\/p>\n
4.2\u3001\u4f7f\u7528TimedRotatingFileHandler<\/h4>\n<\/p>\n
TimedRotatingFileHandler<\/code>\u53ef\u4ee5\u6839\u636e\u65f6\u95f4\u95f4\u9694\u8fdb\u884c\u65e5\u5fd7\u8f6e\u8f6c\uff0c\u4f8b\u5982\u6bcf\u5929\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u65e5\u5fd7\u6587\u4ef6\u3002<\/p>\n<\/p>\n
import logging<\/p>\n
from logging.handlers import TimedRotatingFileHandler<\/p>\n
\u521b\u5efa\u4e00\u4e2a\u65e5\u5fd7\u8bb0\u5f55\u5668<\/strong><\/h2>\n
logger = logging.getLogger('TimedRotatingLogger')<\/p>\n
logger.setLevel(logging.DEBUG)<\/p>\n
\u521b\u5efa\u4e00\u4e2a\u57fa\u4e8e\u65f6\u95f4\u7684\u8f6e\u8f6c\u6587\u4ef6\u5904\u7406\u5668<\/strong><\/h2>\n
timed_handler = TimedRotatingFileHandler('timed_app.log', when='midnight', interval=1, backupCount=5)<\/p>\n
timed_handler.setLevel(logging.DEBUG)<\/p>\n
\u5b9a\u4e49\u65e5\u5fd7\u683c\u5f0f<\/strong><\/h2>\n
formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')<\/p>\n
timed_handler.setFormatter(formatter)<\/p>\n
\u5c06\u5904\u7406\u5668\u6dfb\u52a0\u5230\u65e5\u5fd7\u8bb0\u5f55\u5668<\/strong><\/h2>\n
logger.addHandler(timed_handler)<\/p>\n
\u8bb0\u5f55\u65e5\u5fd7<\/strong><\/h2>\n
logger.debug('\u8fd9\u662f\u4e00\u4e2a\u8c03\u8bd5\u6d88\u606f')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u5e94\u7528\u65e5\u5fd7<\/h3>\n<\/p>\n
\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\uff0c\u5408\u7406\u4f7f\u7528\u65e5\u5fd7\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u5feb\u901f\u5b9a\u4f4d\u95ee\u9898\u3001\u76d1\u63a7\u7a0b\u5e8f\u8fd0\u884c\u72b6\u6001\u3001\u4ee5\u53ca\u8bb0\u5f55\u91cd\u8981\u7684\u4e1a\u52a1\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
5.1\u3001\u8bb0\u5f55\u5173\u952e\u4e1a\u52a1\u64cd\u4f5c<\/h4>\n<\/p>\n
\u5728\u91cd\u8981\u7684\u4e1a\u52a1\u64cd\u4f5c\u4e2d\u8bb0\u5f55\u65e5\u5fd7\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u8ffd\u8e2a\u64cd\u4f5c\u8fc7\u7a0b\u53ca\u7ed3\u679c\u3002\u4f8b\u5982\uff0c\u5728\u7528\u6237\u6ce8\u518c\u3001\u767b\u5f55\u3001\u8ba2\u5355\u652f\u4ed8\u7b49\u73af\u8282\u8bb0\u5f55\u65e5\u5fd7\u3002<\/p>\n<\/p>\n
import logging<\/p>\n
\u521b\u5efa\u4e00\u4e2a\u65e5\u5fd7\u8bb0\u5f55\u5668<\/strong><\/h2>\n
logger = logging.getLogger('BusinessLogger')<\/p>\n
logger.setLevel(logging.INFO)<\/p>\n
\u521b\u5efa\u63a7\u5236\u53f0\u5904\u7406\u5668<\/strong><\/h2>\n
console_handler = logging.StreamHandler()<\/p>\n
console_handler.setLevel(logging.INFO)<\/p>\n
\u5b9a\u4e49\u65e5\u5fd7\u683c\u5f0f<\/strong><\/h2>\n
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')<\/p>\n
console_handler.setFormatter(formatter)<\/p>\n
\u5c06\u5904\u7406\u5668\u6dfb\u52a0\u5230\u65e5\u5fd7\u8bb0\u5f55\u5668<\/strong><\/h2>\n
logger.addHandler(console_handler)<\/p>\n
\u8bb0\u5f55\u5173\u952e\u4e1a\u52a1\u64cd\u4f5c<\/strong><\/h2>\n
def user_register(username):<\/p>\n
    logger.info(f'\u7528\u6237{username}\u6ce8\u518c\u6210\u529f')<\/p>\n
def user_login(username):<\/p>\n
    logger.info(f'\u7528\u6237{username}\u767b\u5f55\u6210\u529f')<\/p>\n
user_register('Alice')<\/p>\n
user_login('Alice')<\/p>\n
<\/code><\/pre>\n<\/p>\n
5.2\u3001\u8bb0\u5f55\u9519\u8bef\u548c\u5f02\u5e38\u4fe1\u606f<\/h4>\n<\/p>\n
\u5728\u7a0b\u5e8f\u4e2d\u6355\u83b7\u5f02\u5e38\u65f6\u8bb0\u5f55\u9519\u8bef\u65e5\u5fd7\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5206\u6790\u95ee\u9898\u539f\u56e0\u548c\u5b9a\u4f4d\u9519\u8bef\u4f4d\u7f6e\u3002<\/p>\n<\/p>\n
import logging<\/p>\n
\u521b\u5efa\u4e00\u4e2a\u65e5\u5fd7\u8bb0\u5f55\u5668<\/strong><\/h2>\n
logger = logging.getLogger('ErrorLogger')<\/p>\n
logger.setLevel(logging.ERROR)<\/p>\n
\u521b\u5efa\u63a7\u5236\u53f0\u5904\u7406\u5668<\/strong><\/h2>\n
console_handler = logging.StreamHandler()<\/p>\n
console_handler.setLevel(logging.ERROR)<\/p>\n
\u5b9a\u4e49\u65e5\u5fd7\u683c\u5f0f<\/strong><\/h2>\n
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')<\/p>\n
console_handler.setFormatter(formatter)<\/p>\n
\u5c06\u5904\u7406\u5668\u6dfb\u52a0\u5230\u65e5\u5fd7\u8bb0\u5f55\u5668<\/strong><\/h2>\n
logger.addHandler(console_handler)<\/p>\n
\u6355\u83b7\u5f02\u5e38\u5e76\u8bb0\u5f55\u9519\u8bef\u65e5\u5fd7<\/strong><\/h2>\n
def divide(a, b):<\/p>\n
    try:<\/p>\n
        result = a \/ b<\/p>\n
    except ZeroDivisionError as e:<\/p>\n
        logger.error('\u9664\u6570\u4e0d\u80fd\u4e3a\u96f6', exc_info=True)<\/p>\n
    else:<\/p>\n
        return result<\/p>\n
divide(10, 0)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u5408\u7406\u5730\u4f7f\u7528logging<\/code>\u6a21\u5757\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u8f7b\u677e\u5730\u5728Python\u7a0b\u5e8f\u4e2d\u5b9e\u73b0\u65e5\u5fd7\u8bb0\u5f55\u529f\u80fd\uff0c\u4e3a\u7a0b\u5e8f\u8c03\u8bd5\u548c\u7ef4\u62a4\u63d0\u4f9b\u5f3a\u6709\u529b\u7684\u652f\u6301\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u914d\u7f6e\u65e5\u5fd7\u8bb0\u5f55\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684logging<\/code>\u6a21\u5757\u6765\u914d\u7f6e\u65e5\u5fd7\u8bb0\u5f55\u3002\u9996\u5148\uff0c\u5bfc\u5165logging<\/code>\u6a21\u5757\uff0c\u7136\u540e\u8bbe\u7f6e\u57fa\u672c\u914d\u7f6e\uff0c\u4f8b\u5982\u65e5\u5fd7\u7684\u7ea7\u522b\u3001\u683c\u5f0f\u548c\u8f93\u51fa\u4f4d\u7f6e\u3002\u53ef\u4ee5\u9009\u62e9\u5c06\u65e5\u5fd7\u8f93\u51fa\u5230\u63a7\u5236\u53f0\u6216\u6587\u4ef6\u4e2d\uff0c\u5177\u4f53\u4ee3\u7801\u793a\u4f8b\u5982\u4e0b\uff1a  <\/p>\n
import logging\n\nlogging.basicConfig(level=logging.INFO, \n                    format='%(asctime)s - %(levelname)s - %(message)s',\n                    filename='app.log', \n                    filemode='w')  # 'w'\u4e3a\u8986\u76d6\u6a21\u5f0f\uff0c'a'\u4e3a\u8ffd\u52a0\u6a21\u5f0f\n<\/code><\/pre>\n
\u914d\u7f6e\u5b8c\u6210\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528logging.info()<\/code>, logging.error()<\/code>\u7b49\u65b9\u6cd5\u8bb0\u5f55\u4e0d\u540c\u7ea7\u522b\u7684\u65e5\u5fd7\u4fe1\u606f\u3002<\/p>\n
\u5982\u4f55\u67e5\u770bPython\u7a0b\u5e8f\u751f\u6210\u7684\u65e5\u5fd7\u6587\u4ef6\uff1f<\/strong>
\u67e5\u770bPython\u7a0b\u5e8f\u751f\u6210\u7684\u65e5\u5fd7\u6587\u4ef6\u975e\u5e38\u7b80\u5355\uff0c\u53ea\u9700\u4f7f\u7528\u6587\u672c\u7f16\u8f91\u5668\u6216\u547d\u4ee4\u884c\u5de5\u5177\u6253\u5f00\u6307\u5b9a\u7684\u65e5\u5fd7\u6587\u4ef6\u5373\u53ef\u3002\u4f8b\u5982\uff0c\u5982\u679c\u65e5\u5fd7\u6587\u4ef6\u540d\u4e3aapp.log<\/code>\uff0c\u53ef\u4ee5\u4f7f\u7528cat app.log<\/code>\u547d\u4ee4\u5728\u7ec8\u7aef\u4e2d\u67e5\u770b\u6587\u4ef6\u5185\u5bb9\uff0c\u6216\u8005\u4f7f\u7528\u4efb\u4f55\u6587\u672c\u7f16\u8f91\u5668\uff08\u5982Notepad++\u3001VS Code\u7b49\uff09\u6253\u5f00\u5e76\u67e5\u770b\u65e5\u5fd7\u8bb0\u5f55\u3002<\/p>\n
\u65e5\u5fd7\u7684\u7ea7\u522b\u6709\u54ea\u4e9b\uff0c\u5206\u522b\u8868\u793a\u4ec0\u4e48\uff1f<\/strong>
Python\u7684logging<\/code>\u6a21\u5757\u5b9a\u4e49\u4e86\u591a\u4e2a\u65e5\u5fd7\u7ea7\u522b\uff0c\u5305\u62ec\uff1a  <\/p>\n
    \n
  • DEBUG<\/strong>: \u8be6\u7ec6\u7684\u4fe1\u606f\uff0c\u901a\u5e38\u53ea\u5728\u8bca\u65ad\u95ee\u9898\u65f6\u4f7f\u7528\u3002<\/li>\n
  • INFO<\/strong>: \u8868\u793a\u7a0b\u5e8f\u6b63\u5e38\u8fd0\u884c\u65f6\u7684\u4e00\u822c\u4fe1\u606f\u3002<\/li>\n
  • WARNING<\/strong>: \u8868\u793a\u67d0\u79cd\u60c5\u51b5\u53ef\u80fd\u4f1a\u5bfc\u81f4\u95ee\u9898\u7684\u8b66\u544a\u3002<\/li>\n
  • ERROR<\/strong>: \u8868\u793a\u53d1\u751f\u9519\u8bef\uff0c\u5f71\u54cd\u7a0b\u5e8f\u7684\u4e00\u90e8\u5206\u529f\u80fd\u3002<\/li>\n
  • CRITICAL<\/strong>: \u4e25\u91cd\u9519\u8bef\uff0c\u5bfc\u81f4\u7a0b\u5e8f\u65e0\u6cd5\u7ee7\u7eed\u8fd0\u884c\u3002<\/li>\n<\/ul>\n
    \u901a\u8fc7\u8bbe\u7f6e\u4e0d\u540c\u7684\u65e5\u5fd7\u7ea7\u522b\uff0c\u53ef\u4ee5\u7075\u6d3b\u63a7\u5236\u8f93\u51fa\u7684\u4fe1\u606f\uff0c\u4ee5\u6ee1\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u8981\u67e5\u770bPython\u7a0b\u5e8f\u65e5\u5fd7\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684logging\u6a21\u5757\u3001\u901a\u8fc7\u8bbe\u7f6e\u4e0d\u540c\u7684\u65e5\u5fd7\u7ea7\u522b\u6765\u63a7\u5236\u8f93\u51fa\u3001\u5c06\u65e5\u5fd7\u8f93\u51fa\u5230\u6587 […]","protected":false},"author":3,"featured_media":973414,"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\/973405"}],"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=973405"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/973405\/revisions"}],"predecessor-version":[{"id":973417,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/973405\/revisions\/973417"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/973414"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=973405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=973405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=973405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}