Base app.py
Browse files
app.py
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from ctransformers import AutoModelForCausalLM
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import gradio as gr
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def generate_prompt(history):
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prompt = start_message
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for chain in history[:-1]:
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prompt += f"<|im_start|>user\n{chain[0]}<|im_end|>" +\
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f"<|im_start|>assistant\n{chain[1]}<|im_end|>"
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prompt += f"<|im_start|>user\n{history[-1][0]}<|im_end|>" +\
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"<|im_start|>assistant\n"
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return prompt
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def generate(history):
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prompt = generate_prompt(history)
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streamer = llm(prompt, stop = stop_tokens, stream=True, threads=2)
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return streamer
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llm = AutoModelForCausalLM.from_pretrained("model/ggml-model-q8_0.bin", model_type='mpt')
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stop_tokens = ["<|im_end|>", "<|endoftext|>"]
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start_message = """<|im_start|>system
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You are a helpful assistant chatbot.<|im_end|>
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"""
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with gr.Blocks() as demo:
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chatbot = gr.Chatbot()
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msg = gr.Textbox()
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clear = gr.Button("Clear")
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def user(user_message, history):
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return "", history + [[user_message, ""]]
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def bot(history):
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streamer = generate(history)
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for token in streamer:
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history[-1][1] += token
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yield history
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msg.submit(user, [msg, chatbot], [msg, chatbot], queue=False).then(
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bot, chatbot, chatbot
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)
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clear.click(lambda: None, None, chatbot, queue=False)
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demo.queue()
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if __name__ == "__main__":
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demo.launch(server_name="0.0.0.0", server_port=7860)
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