Update LangChain_QA_Panel_App.ipynb

LangChain_QA_Panel_App.ipynb

@@ -0,0 +1,13 @@
+#!pip install langchain openai chromadb tiktoken pypdf panel
+
+import os 
+from langchain.chains import RetrievalQA
+from langchain.llms import OpenAI
+from langchain.document_loaders import TextLoader
+from langchain.document_loaders import PyPDFLoader
+from langchain.indexes import VectorstoreIndexCreator
+from langchain.text_splitter import CharacterTextSplitter
+from langchain.embeddings import OpenAIEmbeddings
+from langchain.vectorstores import Chroma
+import panel as pn
+import tempfile