import llama_cpp

llama = llama_cpp.Llama.from_pretrained(
    repo_id="Qwen/Qwen1.5-0.5B-Chat-GGUF",
    filename="*q8_0.gguf",
    verbose=False
)

response = llama.create_chat_completion(
    messages=[
        {
            "role": "user",
            "content": "What is the capital of France?"
        }
    ],
    response_format={
        "type": "json_object",
        "schema": {
            "type": "object",
            "properties": {
                "country": {"type": "string"},
                "capital": {"type": "string"}
            },
            "required": ["country", "capital"],
        }
    },
    stream=True
)

for chunk in response:
    delta = chunk["choices"][0]["delta"]
    if "content" not in delta:
        continue
    print(delta["content"], end="", flush=True)

print()