How to create Dynamic forms with variable number of elements?

[mathcatsand]

Does this example provide some insight?

Add a line item or row

I have a related example here. (Instead of a button to add one, it uses a slider to set the number of rows but the Streamlit mechanics are the same.) The example has the forth column being computed from other columns as an additional feature. https://mathcatsand-examples.streamlit.app/add_data [image] import streamlit as st st.write('# Solution using input widgets') # a selection for the user to specify the number of rows num_rows = st.slider('Number of rows', min_value=1, max_value=10) #…