Please improve logging formatter with time

[MarcSkovMadsen]

Summary

In order to be able to trace errors using the log it would be really helpfull to get more information for like for example time.

Steps

If I set the logLevel = "debug" I get logging output. But it's difficult to track down issues over a longer period of time when there is no time information.

Expected

I would expect something like

Hack

For now you can insert

@st.cache
def set_logging_format() -> bool:
    loggers = [
        name for name in logging.root.manager.loggerDict if name.startswith("streamlit")
    ]
    formatter = logging.Formatter("%(asctime)s %(name)s: %(message)s")
    for name in loggers:
        logger = logging.getLogger(name)
        for ch in logger.handlers:
            ch.setFormatter(formatter)
    return True


set_logging_format()

in your app.py file. But it's looking a bit like a hack?

Feature Request

I would like to be able to either

• run my own configuration script (including the above) on server start up

or

• set a configuration setting in the config.toml file like

loggingFormat="%(asctime)s %(name)s: %(message)s"

[bukosabino]

Hi @MarcSkovMadsen ,

Your hack is not working in 0.52.0 version, right?

Any solution to use time info when we use logging?

Best,
Dario

[drorata]

I got to this issue as I fail to define a logger with a customized format. It seems like streamlit hijacks loggers. Is it related? Can someone point me how to add loggers for my app?