update

main.py

@@ -1,6 +1,9 @@
-from fastapi import FastAPI
+from fastapi import FastAPI, Form
+import torch
+from transformers import pipeline
 
 app = FastAPI()
+pipe = pipeline("text-generation", model="TinyLlama/TinyLlama-1.1B-Chat-v1.0", torch_dtype=torch.bfloat16, device_map="auto")
 
 @app.get("/")
 def read_root():
@@ -9,3 +12,24 @@ def read_root():
 @app.get("/items/{item_id}")
 def read_item(item_id: int, query_param: str = None):
     return {"item_id": item_id, "query_param": query_param}
+
+@app.post("/chat")
+async def chat(sentence: str = Form(...)):
+    print("start chat")
+    if sentence.lower() == "quit":
+        return {"response": "Chatbot session ended."}
+
+    messages = [
+        {
+            "role": "system",
+            "content": "You are a friendly chatbot who always responds in the style of a pirate",
+        },
+        {"role": "user", "content": sentence},
+    ]
+    print("start apply_chat_template")
+    prompt = pipe.tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
+    print("start outputs")
+    outputs = pipe(prompt, max_new_tokens=256, do_sample=True, temperature=0.7, top_k=50, top_p=0.95)
+    text = outputs[0]["generated_text"]
+
+    return {"response": text}