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Runtime error
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from fastapi import FastAPI, HTTPException, Request
from llama_cpp import Llama
import time
import os
app = FastAPI()
llm = Llama(model_path="llama-2-7b-chat.Q3_K_S.gguf", n_ctx=2048, n_batch=512, use_mlock=True, n_threads=8)
def typewrite(text, delay=0.01):
for char in text:
print(char, end='', flush=True)
time.sleep(delay)
print(end='', flush=True) # Print newline to move to the next line
@app.post("/chat")
async def chat(request: Request):
try:
data = await request.json()
user_input = data.get("user_input")
if not user_input:
raise HTTPException(status_code=400, detail="Missing 'user_input' field in the request JSON.")
os.system("cls")
print("Chatbot by Aritra Roy & DVLH")
ask = user_input
prompt = f"Llama-2-Chat [INST] <<SYS>>You're an assistant named Tusti. You are Developed by Aritra Roy. Don't share any false information.<</SYS>> {ask} [/INST]"
output_stream = llm(prompt, max_tokens=1024, echo=False, temperature=0.2, top_p=0.1, stream=True)
response_text_chunk = ''
while True:
try:
chunk = next(output_stream)
if chunk.get('choices') and chunk['choices'][0].get('text'):
response_text_chunk += chunk['choices'][0]['text']
typewrite(response_text_chunk, delay=0.00)
except StopIteration:
break
if ask == 'clear':
os.system("cls")
return {"response": response_text_chunk}
except Exception as e:
raise HTTPException(status_code=500, detail=str(e))
if __name__ == "__main__":
import uvicorn
uvicorn.run(app, host="0.0.0.0", port=7860)
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