Streamlit documentation
Streamlit is an open-source Python framework for data scientists and AI/ML engineers to deliver dynamic data apps with only a few lines of code. Build and deploy powerful data apps in minutes. Let's get started!
How to use our docs
Get started with Streamlit! Set up your development environment and learn the fundamental concepts, and start coding!
Develop your Streamlit app! Our API reference explains each Streamlit function with examples. Dive deep into all of our features with conceptual guides. Try out our step-by-step tutorials.
Deploy your Streamlit app! Streamlit Community Cloud our free platform for deploying and sharing Streamlit apps. Streamlit in Snowflake is an enterprise-class solution where you can house your data and apps in one, unified, global system. Explore all your options!
Knowledge base is a self-serve library of tips, tricks, and articles that answer your questions about creating and deploying Streamlit apps.
What's new
Side drawer dialogs
Set position="left" or position="right" on st.dialog to open it as a full-height side drawer.
Alt text for elements
Use the alt parameter to give images, media, charts, maps, and dataframes an accessible name for screen readers.
ECharts charts
st.echarts_chart renders Apache ECharts options with Streamlit theming. Pass a dict, a JSON string, or a pyecharts chart.
Async app code
Use async/await and popular async libraries directly in your Streamlit apps. The caching decorators work with async def functions too.
Parallel fragments
Set parallel=True on st.fragment to run independent fragments concurrently during full-app reruns.
Background cache refresh
Refresh expired cached values in the background while your app continues serving the previous value.
Latest blog posts
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Streamlit is more than just a way to make data apps, it's also a community of creators that share their apps and ideas and help each other make their work better. Please come join us on the community forum. We love to hear your questions, ideas, and help you work through your bugs — stop by today!
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