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README.md

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+---
+title: Basic DAG AI Chatbot With ChatGPT
+emoji: 📚
+colorFrom: purple
+colorTo: purple
+sdk: streamlit
+sdk_version: 1.27.2
+app_file: app.py
+pinned: false
+license: apache-2.0
+---
+
+Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference

app.py

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+import streamlit as st
+from dotenv import load_dotenv
+from PyPDF2 import PdfReader
+from langchain.text_splitter import CharacterTextSplitter, RecursiveCharacterTextSplitter
+from langchain.embeddings import OpenAIEmbeddings, HuggingFaceInstructEmbeddings
+from langchain.vectorstores import FAISS, Chroma
+from langchain.embeddings import HuggingFaceEmbeddings  # General embeddings from HuggingFace models.
+from langchain.chat_models import ChatOpenAI
+from langchain.memory import ConversationBufferMemory
+from langchain.chains import ConversationalRetrievalChain
+from htmlTemplates import css, bot_template, user_template
+from langchain.llms import HuggingFaceHub, LlamaCpp, CTransformers  # For loading transformer models.
+from langchain.document_loaders import PyPDFLoader, TextLoader, JSONLoader, CSVLoader
+import tempfile # 임시 파일을 생성하기 위한 라이브러리입니다.
+import os
+
+
+# PDF 문서로부터 텍스트를 추출하는 함수입니다.
+def get_pdf_text(pdf_docs):
+    temp_dir = tempfile.TemporaryDirectory() # 임시 디렉토리를 생성합니다.
+    temp_filepath = os.path.join(temp_dir.name, pdf_docs.name) # 임시 파일 경로를 생성합니다.
+    with open(temp_filepath, "wb") as f:  # 임시 파일을 바이너리 쓰기 모드로 엽니다.
+        f.write(pdf_docs.getvalue()) # PDF 문서의 내용을 임시 파일에 씁니다.
+    pdf_loader = PyPDFLoader(temp_filepath) # PyPDFLoader를 사용해 PDF를 로드합니다.
+    pdf_doc = pdf_loader.load() # 텍스트를 추출합니다.
+    return pdf_doc # 추출한 텍스트를 반환합니다.
+
+# 과제
+# 아래 텍스트 추출 함수를 작성
+
+def get_text_file(docs):
+    pass
+
+
+def get_csv_file(docs):
+    pass
+
+def get_json_file(docs):
+    pass
+
+    
+# 문서들을 처리하여 텍스트 청크로 나누는 함수입니다.
+def get_text_chunks(documents):
+    text_splitter = RecursiveCharacterTextSplitter(
+        chunk_size=1000, # 청크의 크기를 지정합니다.
+        chunk_overlap=200, # 청크 사이의 중복을 지정합니다.
+        length_function=len # 텍스트의 길이를 측정하는 함수를 지정합니다.
+    )
+
+    documents = text_splitter.split_documents(documents) # 문서들을 청크로 나눕니다
+    return documents # 나눈 청크를 반환합니다.
+
+
+# 텍스트 청크들로부터 벡터 스토어를 생성하는 함수입니다.
+def get_vectorstore(text_chunks):
+    # OpenAI 임베딩 모델을 로드합니다. (Embedding models - Ada v2)
+
+    embeddings = OpenAIEmbeddings()
+    vectorstore = FAISS.from_documents(text_chunks, embeddings) # FAISS 벡터 스토어를 생성합니다.
+
+    return vectorstore # 생성된 벡터 스토어를 반환합니다.
+
+
+def get_conversation_chain(vectorstore):
+    gpt_model_name = 'gpt-3.5-turbo'
+    llm = ChatOpenAI(model_name = gpt_model_name) #gpt-3.5 모델 로드
+    
+    # 대화 기록을 저장하기 위한 메모리를 생성합니다.
+    memory = ConversationBufferMemory(
+        memory_key='chat_history', return_messages=True)
+    # 대화 검색 체인을 생성합니다.
+    conversation_chain = ConversationalRetrievalChain.from_llm(
+        llm=llm,
+        retriever=vectorstore.as_retriever(),
+        memory=memory
+    )
+    return conversation_chain
+
+# 사용자 입력을 처리하는 함수입니다.
+def handle_userinput(user_question):
+    # 대화 체인을 사용하여 사용자 질문에 대한 응답을 생성합니다.
+    response = st.session_state.conversation({'question': user_question})
+    # 대화 기록을 저장합니다.
+    st.session_state.chat_history = response['chat_history']
+
+    for i, message in enumerate(st.session_state.chat_history):
+        if i % 2 == 0:
+            st.write(user_template.replace(
+                "{{MSG}}", message.content), unsafe_allow_html=True)
+        else:
+            st.write(bot_template.replace(
+                "{{MSG}}", message.content), unsafe_allow_html=True)
+
+
+def main():
+    load_dotenv()
+    st.set_page_config(page_title="Chat with multiple Files",
+                       page_icon=":books:")
+    st.write(css, unsafe_allow_html=True)
+
+    if "conversation" not in st.session_state:
+        st.session_state.conversation = None
+    if "chat_history" not in st.session_state:
+        st.session_state.chat_history = None
+
+    st.header("Chat with multiple Files :")
+    user_question = st.text_input("Ask a question about your documents:")
+    if user_question:
+        handle_userinput(user_question)
+
+    with st.sidebar:
+        openai_key = st.text_input("Paste your OpenAI API key (sk-...)")
+        if openai_key:
+            os.environ["OPENAI_API_KEY"] = openai_key
+
+        st.subheader("Your documents")
+        docs = st.file_uploader(
+            "Upload your PDFs here and click on 'Process'", accept_multiple_files=True)
+        if st.button("Process"):
+            with st.spinner("Processing"):
+                # get pdf text
+                doc_list = []
+
+                for file in docs:
+                    print('file - type : ', file.type)
+                    if file.type == 'text/plain':
+                        # file is .txt
+                        doc_list.extend(get_text_file(file))
+                    elif file.type in ['application/octet-stream', 'application/pdf']:
+                        # file is .pdf
+                        doc_list.extend(get_pdf_text(file))
+                    elif file.type == 'text/csv':
+                        # file is .csv
+                        doc_list.extend(get_csv_file(file))
+                    elif file.type == 'application/json':
+                        # file is .json
+                        doc_list.extend(get_json_file(file))
+
+                # get the text chunks
+                text_chunks = get_text_chunks(doc_list)
+
+                # create vector store
+                vectorstore = get_vectorstore(text_chunks)
+
+                # create conversation chain
+                st.session_state.conversation = get_conversation_chain(
+                    vectorstore)
+
+
+if __name__ == '__main__':
+    main()

gitattributes

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+*.7z filter=lfs diff=lfs merge=lfs -text
+*.arrow filter=lfs diff=lfs merge=lfs -text
+*.bin filter=lfs diff=lfs merge=lfs -text
+*.bz2 filter=lfs diff=lfs merge=lfs -text
+*.ckpt filter=lfs diff=lfs merge=lfs -text
+*.ftz filter=lfs diff=lfs merge=lfs -text
+*.gz filter=lfs diff=lfs merge=lfs -text
+*.h5 filter=lfs diff=lfs merge=lfs -text
+*.joblib filter=lfs diff=lfs merge=lfs -text
+*.lfs.* filter=lfs diff=lfs merge=lfs -text
+*.mlmodel filter=lfs diff=lfs merge=lfs -text
+*.model filter=lfs diff=lfs merge=lfs -text
+*.msgpack filter=lfs diff=lfs merge=lfs -text
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+*.pb filter=lfs diff=lfs merge=lfs -text
+*.pickle filter=lfs diff=lfs merge=lfs -text
+*.pkl filter=lfs diff=lfs merge=lfs -text
+*.pt filter=lfs diff=lfs merge=lfs -text
+*.pth filter=lfs diff=lfs merge=lfs -text
+*.rar filter=lfs diff=lfs merge=lfs -text
+*.safetensors filter=lfs diff=lfs merge=lfs -text
+saved_model/**/* filter=lfs diff=lfs merge=lfs -text
+*.tar.* filter=lfs diff=lfs merge=lfs -text
+*.tar filter=lfs diff=lfs merge=lfs -text
+*.tflite filter=lfs diff=lfs merge=lfs -text
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+*.zip filter=lfs diff=lfs merge=lfs -text
+*.zst filter=lfs diff=lfs merge=lfs -text
+*tfevents* filter=lfs diff=lfs merge=lfs -text

htmlTemplates.py

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+css = '''
+<style>
+.chat-message {
+    padding: 1.5rem; border-radius: 0.5rem; margin-bottom: 1rem; display: flex
+}
+.chat-message.user {
+    background-color: #2b313e
+}
+.chat-message.bot {
+    background-color: #475063
+}
+.chat-message .avatar {
+  width: 20%;
+}
+.chat-message .avatar img {
+  max-width: 78px;
+  max-height: 78px;
+  border-radius: 50%;
+  object-fit: cover;
+}
+.chat-message .message {
+  width: 80%;
+  padding: 0 1.5rem;
+  color: #fff;
+}
+'''
+
+bot_template = '''
+<div class="chat-message bot">
+    <div class="avatar">
+        <img src="https://i.ibb.co/cN0nmSj/Screenshot-2023-05-28-at-02-37-21.png" style="max-height: 78px; max-width: 78px; border-radius: 50%; object-fit: cover;">
+    </div>
+    <div class="message">{{MSG}}</div>
+</div>
+'''
+
+user_template = '''
+<div class="chat-message user">
+    <div class="avatar">
+        <img src="https://i.ibb.co/rdZC7LZ/Photo-logo-1.png">
+    </div>    
+    <div class="message">{{MSG}}</div>
+</div>
+'''

requirements.txt

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+langchain
+llama-cpp-python
+PyPDF2==3.0.1
+faiss-cpu==1.7.4
+ctransformers
+pypdf
+chromadb
+tiktoken
+pysqlite3-binary
+streamlit-extras
+InstructorEmbedding
+sentence-transformers
+jq
+openai