Yes, it is possible to retrieve and display the username or email address of the logged-in user in a Streamlit app deployed on Databricks. This can be achieved through two primary approaches:

1. Using "st.experimental_user" in streamlit.

import streamlit as st

# Access the user's email

user_email = st.experimental_user.get("email", "Unknown User")

# Display the email in the app st.write(f"Logged in as: {user_email}")

2. Using HTTP Headers in Databricks Apps.

import os

import streamlit as st

# Access headers passed by Databricks Apps

user_email = os.getenv("X-Forwarded-Email", "Unknown User")

# Display the user's email

st.write(f"Logged in as: {user_email}")

Hope this helps. Cheers, Louis.