前言：
此刻我们对“python 日志函数”都比较关怀，你们都想要了解一些“python 日志函数”的相关内容。那么小编在网摘上收集了一些有关“python 日志函数””的相关知识，希望姐妹们能喜欢，咱们一起来了解一下吧！Python项目中记录日志及异常捕获
推荐使用 loguru，pip install loguru
Loguru是一个旨在以Python带来令人愉悦的日志记录的库。Loguru的主要概念是只有一个 logger。没有 Handler, 没有 Formatter, 没有Filter只有一个add函数。循环、保留、压缩、异常捕获、结构化日志、解析器、异步、线程安全、多线程安全...好处多多。
loguru旨在通过添加一系列有用的功能来解决标准记录器的注意事项，从而减少 Python 日志记录的痛苦。
详细可参考：
loguru基础功能测试
运行后，test.log不断增大，当达到设置的上限大小后，比如1 MB，则会按照其规则进行打包，例如：test.2022-09-07_02-48-34_016556.log.tar.gz
main.py
from loguru import logger if __name__ == '__main__': log_path_file = "./test.log" logger.add(log_path_file, # Automatically rotate too big file # for example:"10 MB"、"0.5 GB"、"1 month 2 weeks"、"4 days"、"10h"、"18:00"... rotation="1 MB", # Cleanup after some time # for example: "10 days"、"1 week, 3 days"、"2 months"、"1 minutes"... retention="1 minutes", encoding="utf-8", # Asynchronous, Thread-safe, Multiprocess-safe enqueue=True, # Save some loved space # for example: "gz", "bz2", "xz", "lzma", "tar", "tar.gz", "tar.bz2", "tar.xz", "zip". compression="tar.gz") # 日志滚动测试 while 1: logger.debug("This's a log message") logger.info("你好世界") logger.error("hello world")flask基础loguru实现日志记录及异常捕获main.py
from flask import Flask, jsonify, request, gfrom flask_cors import *import os, traceback, timefrom loguru import loggerlog_path = f"../logs"if not os.path.exists(log_path): os.makedirs(log_path)t = time.strftime("%Y_%m_%d")log_path_file = f"{log_path}/interface_log_{t}.log"def setup_logging(): logger.add(log_path_file, rotation="10 MB", retention="90 days", encoding="utf-8", enqueue=True, level='INFO', compression="tar.gz")setup_logging()app = Flask(__name__)app.config['JSON_AS_ASCII'] = FalseCORS(app, supports_cordentials=True)@app.before_requestdef before_request_middle_req(): try: g.start_time = time.time() url_method = request.method.upper() url_str = request.url if 'OPTIONS' == url_method: return None logger.info(f'(starting:)server receive,url={url_str},method={url_method}') except Exception as e: logger.error(f'请求异常:{e.__dict__},traceback={traceback.format_exc()}') resultObj = {'code': 900, 'message': 'request error'} return jsonify(resultObj)@app.after_requestdef after_request_middle_req(response): url_str = request.url url_method = request.method.upper() if 'OPTIONS' == url_method: return response if "start_time" not in g: return response request_duration = round((time.time() - g.start_time) * 1000, 2) logger.info(f"(statistics:)" f"method={url_method}" f" path={request.path} status={response.status_code}" f" duration={request_duration}ms") return response@app.route('/test', methods=['POST', 'GET'])def test(): try: resultObj = {'code': 0, 'message': 'success'} return jsonify(resultObj) except Exception as e: logger.error(f'业务异常:{e.__dict__},traceback={traceback.format_exc()}') resultObj = {'code': 1000, 'message': 'Service running exception'} return jsonify(resultObj)if __name__ == '__main__': app.run(host='0.0.0.0', port=8080, debug=False) 版权声明：
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