pages/data.dataframe2.py

import pandas as pd
import streamlit as st


# Cache the dataframe so it's only loaded once
@st.experimental_memo
def load_data():
    return pd.DataFrame(
        {
            "first column": [1, 2, 3, 4],
            "second column": [10, 20, 30, 40],
        }
    )


# Boolean to resize the dataframe, stored as a session state variable
st.checkbox("Use container width", value=False, key="use_container_width")

df = load_data()

# Display the dataframe and allow the user to stretch the dataframe
# across the full width of the container
st.dataframe(df, use_container_width=st.session_state.use_container_width)