Display warning message.

Function signature[source]

st.warning(body, *, icon=None)


body (str)

The warning text to display.

icon (str or None)

An optional, keyword-only argument that specifies an emoji to use as the icon for the alert. Shortcodes are not allowed, please use a single character instead. E.g. "🚨", "🔥", "🤖", etc. Defaults to None, which means no icon is displayed.


import streamlit as st

st.warning('This is a warning', icon="⚠️")

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