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app.py
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import streamlit as st
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#As Langchain team has been working aggresively on improving the tool, we can see a lot of changes happening every weeek,
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#As a part of it, the below import has been depreciated
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#from langchain.chat_models import ChatOpenAI
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#New import from langchain, which replaces the above
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from langchain_openai import ChatOpenAI
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#import os
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#os.environ["OPENAI_API_KEY"] = "sk-AxSfgHoRM4fghdfghdfghdfgfMWSig4fZY9AT"
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from langchain.schema import (
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AIMessage,
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HumanMessage,
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SystemMessage
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)
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# From here down is all the StreamLit UI
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st.set_page_config(page_title="LangChain Demo", page_icon=":robot:")
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st.header("Hey, I'm your Chat GPT")
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if "sessionMessages" not in st.session_state:
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st.session_state.sessionMessages = [
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SystemMessage(content="You are a helpful assistant.")
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]
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def load_answer(question):
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st.session_state.sessionMessages.append(HumanMessage(content=question))
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assistant_answer = chat.invoke(st.session_state.sessionMessages )
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st.session_state.sessionMessages.append(AIMessage(content=assistant_answer.content))
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return assistant_answer.content
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def get_text():
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input_text = st.text_input("You: ")
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return input_text
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chat = ChatOpenAI(temperature=0)
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user_input=get_text()
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submit = st.button('Generate')
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if submit:
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response = load_answer(user_input)
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st.subheader("Answer:")
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st.write(response)
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