Streamlit is a faster way to build and share data apps. Streamlit turns data scripts into shareable web apps in minutes. All in pure Python. No front-end experience required. See more examples at streamlit.io/generative-ai.

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Installation and Setup

We need to install the streamlit Python package: 
pip install streamlit

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Memory

See a usage example. 
from langchain_community.chat_message_histories import StreamlitChatMessageHistory

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Callbacks

See a usage example. 
from langchain_community.callbacks import StreamlitCallbackHandler