Update app.py

app.py

@@ -1,25 +1,18 @@
 import gradio as gr
 
-from langchain.document_loaders import OnlinePDFLoader
-
+from langchain.document_loaders import PyPDFLoader  # Change here
 from langchain.text_splitter import CharacterTextSplitter
-
 from langchain.llms import HuggingFaceHub
-
 from langchain.embeddings import HuggingFaceHubEmbeddings
-
 from langchain.vectorstores import Chroma
-
 from langchain.chains import RetrievalQA
 
-
-
 def loading_pdf():
     return "Loading..."
 
 def pdf_changes(pdf_doc, repo_id):
-    
-    loader = OnlinePDFLoader(pdf_doc.name)
+    # Use PyPDFLoader to load local PDFs
+    loader = PyPDFLoader(pdf_doc.name)  
     documents = loader.load()
     text_splitter = CharacterTextSplitter(chunk_size=300, chunk_overlap=0)
     texts = text_splitter.split_documents(documents)
@@ -41,13 +34,11 @@ def bot(history):
     return history
 
 def infer(question):
-    
     query = question
     result = qa({"query": query})
-
     return result
 
-css="""
+css = """
 #col-container {max-width: 700px; margin-left: auto; margin-right: auto;}
 """
 
@@ -56,11 +47,9 @@ title = """
     <h1>Chat with PDF</h1>
     <p style="text-align: center;">Upload a .PDF from your computer, click the "Load PDF to LangChain" button, <br />
     when everything is ready, you can start asking questions about the pdf ;)</p>
-    <a style="display:inline-block; margin-left: 1em" href="https://huggingface.co/spaces/fffiloni/langchain-chat-with-pdf?duplicate=true"><img src="https://img.shields.io/badge/-Duplicate%20Space%20to%20skip%20the%20queue-blue?labelColor=white&style=flat&logo=data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAAXNSR0IArs4c6QAAAP5JREFUOE+lk7FqAkEURY+ltunEgFXS2sZGIbXfEPdLlnxJyDdYB62sbbUKpLbVNhyYFzbrrA74YJlh9r079973psed0cvUD4A+4HoCjsA85X0Dfn/RBLBgBDxnQPfAEJgBY+A9gALA4tcbamSzS4xq4FOQAJgCDwV2CPKV8tZAJcAjMMkUe1vX+U+SMhfAJEHasQIWmXNN3abzDwHUrgcRGmYcgKe0bxrblHEB4E/pndMazNpSZGcsZdBlYJcEL9Afo75molJyM2FxmPgmgPqlWNLGfwZGG6UiyEvLzHYDmoPkDDiNm9JR9uboiONcBXrpY1qmgs21x1QwyZcpvxt9NS09PlsPAAAAAElFTkSuQmCC&logoWidth=14" alt="Duplicate Space"></a>
 </div>
 """
 
-
 with gr.Blocks(css=css) as demo:
     with gr.Column(elem_id="col-container"):
         gr.HTML(title)
@@ -75,7 +64,7 @@ with gr.Blocks(css=css) as demo:
         chatbot = gr.Chatbot([], elem_id="chatbot").style(height=350)
         question = gr.Textbox(label="Question", placeholder="Type your question and hit Enter ")
         submit_btn = gr.Button("Send message")
-    #load_pdf.click(loading_pdf, None, langchain_status, queue=False)    
+
     repo_id.change(pdf_changes, inputs=[pdf_doc, repo_id], outputs=[langchain_status], queue=False)
     load_pdf.click(pdf_changes, inputs=[pdf_doc, repo_id], outputs=[langchain_status], queue=False)
     question.submit(add_text, [chatbot, question], [chatbot, question]).then(
@@ -85,4 +74,4 @@ with gr.Blocks(css=css) as demo:
         bot, chatbot, chatbot
     )
 
-demo.launch()
+demo.launch()