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Create app.py
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app.py
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import spaces
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import os
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from llama_cpp import Llama
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from llama_cpp_agent import LlamaCppAgent, MessagesFormatterType
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from llama_cpp_agent.providers import LlamaCppPythonProvider
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from llama_cpp_agent.chat_history import BasicChatHistory
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from llama_cpp_agent.chat_history.messages import Roles
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import gradio as gr
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from huggingface_hub import hf_hub_download
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token_huggingface = os.getenv("HUGGINGFACE_TOKEN")
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hf_hub_download(
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repo_id="google/gemma-2-2b-it-GGUF",
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filename="2b_it_v2.gguf",
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local_dir="./modelos",
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token=token_huggingface
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)
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llm = None
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@spaces.GPU(duration=120)
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def responder(
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mensaje,
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historial: list[tuple[str, str]],
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mensaje_sistema,
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max_tokens,
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temperatura,
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top_p,
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top_k,
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penalizacion_repeticion,
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):
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plantilla_chat = MessagesFormatterType.GEMMA_2
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global llm
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if llm is None:
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llm = Llama(
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model_path="modelos/2b_it_v2.gguf",
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flash_attn=True,
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n_gpu_layers=81,
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n_batch=1024,
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n_ctx=8192,
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)
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proveedor = LlamaCppPythonProvider(llm)
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agente = LlamaCppAgent(
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proveedor,
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system_prompt=f"{mensaje_sistema}",
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predefined_messages_formatter_type=plantilla_chat,
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debug_output=True
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)
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configuracion = proveedor.get_provider_default_settings()
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configuracion.temperature = temperatura
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configuracion.top_k = top_k
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configuracion.top_p = top_p
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configuracion.max_tokens = max_tokens
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configuracion.repeat_penalty = penalizacion_repeticion
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configuracion.stream = True
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mensajes = BasicChatHistory()
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for msj in historial:
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usuario = {
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'role': Roles.user,
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'content': msj[0]
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}
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asistente = {
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'role': Roles.assistant,
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'content': msj[1]
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}
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mensajes.add_message(usuario)
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mensajes.add_message(asistente)
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flujo = agente.get_chat_response(
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mensaje,
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llm_sampling_settings=configuracion,
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chat_history=mensajes,
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returns_streaming_generator=True,
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print_output=False
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)
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salida = ""
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for fragmento in flujo:
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salida += fragmento
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yield salida
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descripcion = """<p align="center">Chat con Gemma 2B usando llama.cpp</p>
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<p><center>
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<a href="https://huggingface.co/google/gemma-2-2b-it" target="_blank">[Modelo Gemma 2B it]</a>
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<a href="https://huggingface.co/google/gemma-2-2b-it-GGUF" target="_blank">[Modelo Gemma 2B it GGUF]</a>
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</center></p>
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"""
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demo = gr.ChatInterface(
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responder,
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additional_inputs=[
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gr.Textbox(value="Eres un asistente 煤til.", label="Mensaje del sistema"),
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gr.Slider(minimum=1, maximum=4096, value=2048, step=1, label="Tokens m谩ximos"),
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gr.Slider(minimum=0.1, maximum=4.0, value=0.7, step=0.1, label="Temperatura"),
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gr.Slider(
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minimum=0.1,
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maximum=1.0,
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value=0.95,
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step=0.05,
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label="Top-p",
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),
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gr.Slider(
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minimum=0,
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maximum=100,
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value=40,
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step=1,
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label="Top-k",
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),
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gr.Slider(
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minimum=0.0,
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maximum=2.0,
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value=1.1,
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step=0.1,
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label="Penalizaci贸n por repetici贸n",
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),
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],
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retry_btn="Reintentar",
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undo_btn="Deshacer",
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clear_btn="Limpiar",
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submit_btn="Enviar",
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title="Chat con Gemma 2B usando llama.cpp",
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description=descripcion,
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chatbot=gr.Chatbot(
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scale=1,
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likeable=False,
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show_copy_button=True
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)
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)
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if __name__ == "__main__":
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demo.launch()
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