Update app.py

app.py

@@ -64,14 +64,15 @@ def index_pdf(pdf):
 
     return "PDF indexed successfully!"
 
-def load_sample_pdf(files):
+def load_sample_pdf():
     global vector_store
+    documents = []    
 
     # Load the PDFs
-    loaders = [PyPDFLoader(x) for x in files]
-    documents = []    
-    for loader in loaders:
+    for file in sample_filenames:
+        loader = PyPDFLoader(file)
         documents.extend(loader.load())
+        print(f"{file} is processed!")
 
     # Split the documents into chunks
     text_splitter = RecursiveCharacterTextSplitter(chunk_size=1024, chunk_overlap=64)
@@ -144,7 +145,7 @@ with gr.Blocks(theme="Nymbo/Alyx_Theme") as demo:
         sample_description = gr.Markdown("This sample PDF is a seminal paper in the field of machine learning, titled 'Attention Is All You Need' at https://arxiv.org/abs/1706.03762. It introduces the Transformer model, which has become foundational in natural language processing.")
         index_output = gr.Textbox(label="Indexing Status")
         # index_button.click(index_pdf, inputs=pdf_input, outputs=index_output)
-        load_sample.click(load_sample_pdf, inputs=sample_filenames, outputs=index_output)
+        load_sample.click(load_sample_pdf, inputs=None, outputs=index_output)
     
     with gr.Tab("Chatbot"):
         gr.ChatInterface(