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Create app.py
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app.py
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import os
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import openai
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import sys
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import gradio as gr
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from langchain import OpenAI, PromptTemplate
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from langchain.text_splitter import CharacterTextSplitter
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from langchain.chains.summarize import load_summarize_chain
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from langchain.document_loaders import PyPDFLoader
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from langchain.chains import RetrievalQA
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sys.path.append('../..')
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from dotenv import load_dotenv, find_dotenv
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_ = load_dotenv(find_dotenv()) # read local .env file
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openai.api_key = os.environ['OPENAI_API_KEY']
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llm = OpenAI(temperature=0)
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text_splitter = CharacterTextSplitter()
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def summarize_pdf(pdf_file_path, custom_prompt=""):
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pdf_file_path = pdf_file_path.name
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loader = PyPDFLoader(pdf_file_path)
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docs = loader.load_and_split()
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chain = load_summarize_chain(llm, chain_type="map_reduce")
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summary = chain.run(docs)
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return summary
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def main():
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output_summary = gr.Textbox(label="Summary")
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iface = gr.Interface(
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fn=summarize_pdf,
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inputs=["file"],
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outputs=[output_summary],
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title="PDF Summarizer",
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description="Langchain based summarization application that's given a PDF file or a text from a text box can then create a summary of the text content. <br> Enter the PDF file and get its summary.",
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)
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iface.launch()
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if __name__ == "__main__":
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main()
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