streamlit
Build data web apps from Python scripts
TLDR
SYNOPSIS
streamlit [run] [config] [cache] [options] [file] [-- args]
DESCRIPTION
streamlit creates web applications from Python scripts. Data apps, dashboards, and ML demos are built without web development knowledge.Apps are Python scripts using Streamlit's API. Widgets like sliders, buttons, and text inputs are added with single function calls.Hot reload automatically updates the app when code changes. The development workflow is fast and interactive.Caching decorators prevent recomputation of expensive operations. Data loads and model inference are cached across reruns.Deployment options include Streamlit Community Cloud, which hosts apps from GitHub for free. Self-hosting is also supported.Components extend functionality. Custom widgets, visualizations, and integrations are available from the ecosystem.
PARAMETERS
run FILE
Run Streamlit app.hello
Run demo app.config show
Show configuration.cache clear
Clear cache.version
Show version.--server.port PORT
Server port.--server.address ADDR
Server address.--server.headless BOOL
Run without browser.--browser.serverAddress ADDR
Browser server address.--theme.base THEME
Theme (light/dark).--global.developmentMode BOOL
Development mode.
INSTALL
CAVEATS
Not suited for complex web apps. Limited layout control. Session state needs explicit management. Large apps may have performance issues.
HISTORY
Streamlit was created by Adrien Treuille, Thiago Teixeira, and Amanda Kelly in 2019. It rapidly gained popularity for data science prototyping and was acquired by Snowflake in 2022.