Update app.py

updated the default value of the check type and chunks

app.py

@@ -33,14 +33,14 @@ def qa_system(pdf_file, openai_key, prompt, chain_type, k):
     
     # get the result
     result = qa({"query": prompt})
-    return result['result'], [doc.page_content for doc in result["source_documents"]]
+    return result['result'], ''.join(doc.page_content for doc in result["source_documents"])
 
 # define the Gradio interface
 input_file = gr.inputs.File(label="PDF File")
 openai_key = gr.inputs.Textbox(label="OpenAI API Key", type="password")
 prompt = gr.inputs.Textbox(label="Question Prompt")
-chain_type = gr.inputs.Radio(['stuff', 'map_reduce', "refine", "map_rerank"], label="Chain Type")
-k = gr.inputs.Slider(minimum=1, maximum=5, default=1, label="Number of Relevant Chunks")
+chain_type = gr.inputs.Radio(['stuff', 'map_reduce', "refine", "map_rerank"],default = 'map_reduce',label="Chain Type")
+k = gr.inputs.Slider(minimum=1, maximum=5, default=2, label="Number of Relevant Chunks")
 
 output_text = gr.outputs.Textbox(label="Answer")
 output_docs = gr.outputs.Textbox(label="Relevant Source Text")