Automatic st.write Logging

Custom Components
1

I’ve been looking for a way to do some logging to reflect what I see in my streamlit GUI and am wondering if the ability to do so has been considered for functions like st.write, st.success, st.error, st.warning, etc.?

In my code I do a lot of this…

        txt = f"Sorry, we can't write to your Google Sheet if you don't select one for processing."
        st.warning(txt)
        state('logger').warning(txt)

I’m using loguru and I’ve put the logger into an st.session_state variable called ‘logger’ so I can easily access it and control it throughout my app. This is working nicely, but I’m wondering if there’s a better, more concise way to do this, or maybe a custom component that can help?

2

Can you help me better understand your goal? Is it to have logging present in both the app ui as well as the terminal you ran the app in?

3

Yes, Nico and thanks for responding. My real goal was to capture most of my GUI output in a log file and I’ve achieved that with the simple three lines of code I shared. I have about 30 instances of that block in my app now and it’s working nicely.

I was just thinking that capability would be a nice addition to all of the st.write, st.error, st.warning, etc. functions. I might still create a wrapper function (or a handful of them) to replace those three-line blocks if there is no better way.

If logging were to be added to the existing st.* functions I was thinking an optional argument holding the logger handle would do the trick nicely. Thanks.

4

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