flask log 输出到文件的问题

[zxCoder]

from flask import Flask
import logging

app = Flask(__name__)

@app.route('/')
def hello_world():
    app.logger.error("hello")
    return 'Hello World!'

if __name__ == '__main__':
    handler = logging.FileHandler('flask.log', encoding='UTF-8')
    handler.setLevel(logging.DEBUG)
    logging_format = logging.Formatter(
        '%(asctime)s - %(levelname)s - %(filename)s - %(funcName)s - %(lineno)s - %(message)s')
    handler.setFormatter(logging_format)
    app.logger.addHandler(handler)
    app.run()
    app.logger.error("????")

启动后访问 127.0.0.1:5000/

app.logger.error("hello")这个日志打印了，但是没有按设定的格式，而且也找不到 flask.log 文件

[zeyexe]

When you want to configure logging for your project, you should do it as soon as possible when the program starts.

https://flask.palletsprojects.com/en/2.0.x/logging/#basic-configuration

请尝试在 app = Flask(__name__) 之前配置日志。

[johnsona]

flask 有个 logger 属性 实际上是被 property 装饰的方法 创建对象的时候执行了 文档的建议是 你晚了就 remove 好像是的