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import gradio as gr
from huggingface_hub import InferenceClient
"""
Copied from inference in colab notebook
"""
from transformers import AutoTokenizer , AutoModelForSeq2SeqLM , TextIteratorStreamer
from threading import Thread
# Load model and tokenizer globally to avoid reloading for every request
base_model = "Helsinki-NLP/europarl"
model_path = "Mat17892/t5small_enfr_opus"
# Load tokenizer
tokenizer = AutoTokenizer.from_pretrained(model_path, use_fast=True, legacy=False)
# Load the base model (e.g., LLaMA)
base_model = AutoModelForSeq2SeqLM.from_pretrained(base_model)
# Load LoRA adapter
from peft import PeftModel
model = PeftModel.from_pretrained(base_model, model_path)
def respond(
message: str,
history: list[tuple[str, str]],
system_message: str,
max_tokens: int,
temperature: float,
top_p: float,
):
# Combine system message and history into a single prompt
messages = [{"role": "system", "content": system_message}]
for val in history:
if val[0]:
messages.append({"role": "user", "content": val[0]})
if val[1]:
messages.append({"role": "assistant", "content": val[1]})
messages.append({"role": "user", "content": message})
# Tokenize the messages
inputs = tokenizer.apply_chat_template(
messages,
tokenize = True,
add_generation_prompt = True, # Must add for generation
return_tensors = "pt",
)
# Generate tokens incrementally
streamer = TextIteratorStreamer(tokenizer, skip_prompt=True, skip_special_tokens=True)
generation_kwargs = {
"input_ids": inputs,
"max_new_tokens": max_tokens,
"temperature": temperature,
"top_p": top_p,
"do_sample": True,
"streamer": streamer,
}
thread = Thread(target=model.generate, kwargs=generation_kwargs)
thread.start()
# Yield responses as they are generated
response = ""
for token in streamer:
response += token
yield response
"""
For information on how to customize the ChatInterface, peruse the gradio docs: https://www.gradio.app/docs/chatinterface
"""
demo = gr.ChatInterface(
respond,
additional_inputs=[
gr.Textbox(value="You are a friendly Chatbot.", label="System message"),
gr.Slider(minimum=1, maximum=2048, value=512, step=1, label="Max new tokens"),
gr.Slider(minimum=0.1, maximum=4.0, value=0.7, step=0.1, label="Temperature"),
gr.Slider(
minimum=0.1,
maximum=1.0,
value=0.95,
step=0.05,
label="Top-p (nucleus sampling)",
),
],
)
if __name__ == "__main__":
demo.launch()
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