保存日志记录调试并仅显示日志记录INFO Python

Question

我想将所有日志记录行保存在superwrapper.log中，但仅在控制台中显示INFO。如果我删除文件名行的#，则该文件是okey，但在控制台中看不到任何内容。

if __name__ == '__main__':

    logging.basicConfig(
        #filename='superwrapper.log',
        level=logging.DEBUG,
        format='%(asctime)s.%(msecs)03d %(levelname)s %(module)s - %(funcName)s: %(message)s',
        datefmt='%Y-%m-%d %H:%M:%S'
    )

2020-04-28 11:41:09.698 INFO common - handle_elasticsearch: Elastic connection detected
2020-04-28 11:41:09.699 INFO superwrapper - <module>: Cookies Loaded: |TRUE|
2020-04-28 11:41:09.715 DEBUG connectionpool - _new_conn: Starting new HTTPS connection (1): m.facebook.com:443

Answer 1

import logging
import sys

file_handler = logging.FileHandler('superwrapper.log')
console_handler = logging.StreamHandler(sys.stdout)
console_handler.setLevel(logging.INFO)

logging.basicConfig(
    level=logging.DEBUG,
    format='%(asctime)s.%(msecs)03d %(levelname)s %(module)s - %(funcName)s: %(message)s',
    datefmt='%Y-%m-%d %H:%M:%S',
    handlers=[
        file_handler,
        console_handler
    ]
)

要注意的一件事是StreamHandler写到strerr。通常，您需要使用sys.stdout覆盖它

Answer 2