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Create app.py
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app.py
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from fastapi import FastAPI, Request, Query
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from fastapi.responses import StreamingResponse
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from transformers import AutoModelForSequenceClassification, AutoTokenizer
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import torch
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import time
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app = FastAPI()
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model_name = "prajjwal1/bert-tiny" # Pretrained BERT-Tiny on Hugging Face
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tokenizer = AutoTokenizer.from_pretrained(model_name)
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model = AutoModelForSequenceClassification.from_pretrained(model_name)
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# SSE generator
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def event_stream(text: str):
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time.sleep(1)
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inputs = tokenizer(text, return_tensors="pt", truncation=True, padding=True)
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with torch.no_grad():
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outputs = model(**inputs)
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probs = torch.nn.functional.softmax(outputs.logits, dim=1)
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prediction = torch.argmax(probs, dim=1).item()
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yield f"data: {prediction}\n\n"
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@app.get("/chatstrm")
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async def chat(query: str = Query(..., description="User's message")):
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return StreamingResponse(event_stream(query) , media_type="text/event-stream")
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# Entry point
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if __name__ == "__main__":
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import uvicorn
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uvicorn.run("app:app", host="0.0.0.0", port=7899)
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