st.write and magic commands

Streamlit has two easy ways to display information into your app, which should typically be the first thing you try: st.write and magic.

st.write

Write arguments to the app.

Python
st.write("Hello **world**!")
st.write(my_data_frame)
st.write(my_mpl_figure)

st.write_stream

Write generators or streams to the app with a typewriter effect.

Python
st.write_stream(my_generator)
st.write_stream(my_llm_stream)

Magic

Any time Streamlit sees either a variable or literal value on its own line, it automatically writes that to your app using st.write

Python
"Hello **world**!"
my_data_frame
my_mpl_figure
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