Display warning message.

Function signature[source]

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

Parameters

body (str)

The warning text to display.

icon (str or None)

An optional 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.

Example

import streamlit as st

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