How to redirect python logger info to a log file in python

Question

I want to write all of python logger messages to a log file. I have this code, but the code displays messages on the console and just creates the log file, but writes nothing to it.

file_handler = logging.FileHandler(filename='tmp.log')
stdout_handler = logging.StreamHandler(sys.stdout)
handlers = [file_handler, stdout_handler]

logging.basicConfig(
    level=logging.DEBUG,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s', datefmt='%m/%d/%Y %I:%M:%S %p',
    handlers=handlers
)
logger = logging.getLogger("somename")

What am i doing wrong here

You mean you want to log all sys.stdout to a file rather than to console? — Laksitha Ranasingha
– Laksitha Ranasingha, Commented Mar 2, 2019 at 10:52
I tried your code example, it logs messages both to sys.stdout and to tmp.log — sanyassh
– sanyassh, Commented Mar 2, 2019 at 10:54

Rahil Hastu · Accepted Answer · 2019-03-02 11:23:18Z

1

do, this instead:

logging.basicConfig(
    level=logging.DEBUG,
    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s', datefmt='%m/%d/%Y %I:%M:%S %p',
    filename='tmp.log'
)
logging.debug("somename")

If filename parameter is provided in basicConfig it means the file is opened in this mode. The default is a, which means append.

answered Mar 2, 2019 at 11:23

Rahil Hastu

5582 silver badges13 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to redirect python logger info to a log file in python

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related