Update app.py

app.py

@@ -9,10 +9,10 @@ import os
 os.environ['HUGGINGFACEHUB_API_TOKEN'] = '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'
 llm = HuggingFaceHub(repo_id="google/flan-t5-xxl")
 embeddings = HuggingFaceEmbeddings()
-B=open('us.txt')
-Biden=B.read()
+loader = TextLoader('us.txt')
+documents = loader.load()
 text_splitter = CharacterTextSplitter(chunk_size=1000, chunk_overlap=0)
-texts = text_splitter.split_text(Biden)
+texts = text_splitter.split_documents(documents)
 db = Chroma.from_documents(texts, embeddings)
 retriever = db.as_retriever()
 qa = RetrievalQA.from_chain_type(llm=llm, chain_type="stuff", retriever=retriever)