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Create main.py
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main.py
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from transformers import TextIteratorStreamer
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from threading import Thread
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import gradio as gr
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MAX_INPUT_TOKEN_LENGTH = 4096
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def generate(message, chat_history):
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# Step 1: pre-process the inputs
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conversation = []
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for user, assistant in chat_history:
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conversation.extend([{"role": "user", "content": user}, {"role": "assistant", "content": assistant}])
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conversation.append({"role": "user", "content": message})
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input_ids = tokenizer.apply_chat_template(conversation, return_tensors="pt")
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# in-case our inputs exceed the maximum length, we might need to cut them
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if input_ids.shape[1] > MAX_INPUT_TOKEN_LENGTH:
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input_ids = input_ids[:, -MAX_INPUT_TOKEN_LENGTH:]
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gr.Warning(f"Trimmed input from conversation as it was longer than {MAX_INPUT_TOKEN_LENGTH} tokens.")
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input_ids = input_ids.to(model.device)
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streamer = TextIteratorStreamer(tokenizer, timeout=10.0, skip_prompt=True, skip_special_tokens=True)
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# Step 2: define generation arguments
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generate_kwargs = dict(
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{"input_ids": input_ids},
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streamer=streamer,
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max_new_tokens=1024,
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do_sample=True,
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)
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t = Thread(target=model.generate, kwargs=generate_kwargs)
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t.start()
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# Step 3: generate and stream outputs
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outputs = ""
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for text in streamer:
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outputs += text
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yield outputs
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chat_interface = gr.ChatInterface(generate)
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chat_interface.queue().launch(share=True)
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