Create app.py

app.py

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+import gradio as gr
+from gpt_index import SimpleDirectoryReader, GPTListIndex, GPTSimpleVectorIndex, LLMPredictor, PromptHelper
+from langchain import OpenAI
+import sys
+import os
+
+directory_path = ''
+
+os.environ["OPENAI_API_KEY"] = ''
+
+def construct_index():
+    # set maximum input size
+    max_input_size = 4096
+    # set number of output tokens
+    num_outputs = 256
+    # set maximum chunk overlap
+    max_chunk_overlap = 20
+    # set chunk size limit
+    chunk_size_limit = 600
+
+    prompt_helper = PromptHelper(max_input_size, num_outputs, max_chunk_overlap, chunk_size_limit=chunk_size_limit)
+
+    llm_predictor = LLMPredictor(llm=OpenAI(temperature=0, model_name="text-ada-001", max_tokens=num_outputs))
+
+    documents = SimpleDirectoryReader(directory_path).load_data()
+
+    index = GPTSimpleVectorIndex(documents, llm_predictor=llm_predictor, prompt_helper=prompt_helper)
+
+    index.save_to_disk('index.json')
+
+    return index
+
+def chatbot_response(query_input, chat_history=[]):
+    index = construct_index()
+    response = index.query(query_input, response_mode="compact")
+    chat_history.append(("You:\n", query_input))
+    chat_history.append(("Bot:", response.response))
+    chat_history_text = "\n\n".join(["{}{}".format(item[0], item[1]) for item in chat_history[-9:-1]])
+    response_text = f"{chat_history_text} \n\nBot:{response.response}"
+    return response_text
+
+chat_history = []
+query_input = gr.Textbox(label="What do you want to ask the bot?")
+output_text = gr.Textbox(label="Bot Response and Chat History")
+        
+
+
+def get_chatbot_response(query_input):
+    global chat_history
+    response_text = chatbot_response(query_input, chat_history)
+    # chat_history = chat_history[-10:-1]
+    return response_text
+
+interface = gr.Interface(
+    fn=get_chatbot_response,
+    inputs=query_input,
+    outputs=output_text,
+    title="Chatbot",
+    description="Ask the bot any question and it will give you a response.",
+    examples=["What are some popular tourist destinations in Europe?","What are some famous landmarks in Paris?","What can visitors do in Rome, Italy?","What are some must-see sights in Rome?"],
+
+)
+
+interface.launch()