mistralai

/

Mistral-7B-Instruct-v0.3

like 1.13k

Follow

Mistral AI_ 2,563

Hi all! This PR modifies the chat template to add support for tool use with our new API. In testing, results from applying the chat template seem to be identical to results from passing the same set of messages, tools, and tool calls / tool responses to the Mistral tokenizers (modulo a couple of spaces around special tokens that should get folded into the special token by our tokenizer).

Here is some sample code to try it. Please install the latest version of transformers from main before running it:

import torch
from transformers import AutoModelForCausalLM, AutoTokenizer

checkpoint = "mistralai/Mistral-7B-Instruct-v0.3"

tokenizer = AutoTokenizer.from_pretrained(checkpoint, revision="pr/35")
model = AutoModelForCausalLM.from_pretrained(checkpoint, torch_dtype=torch.bfloat16, device_map="auto")

def get_current_temperature(location: str, unit: str) -> float:
    """
    Get the current temperature at a location.
    
    Args:
        location: The location to get the temperature for, in the format "City, Country"
        unit: The unit to return the temperature in. (choices: ["celsius", "fahrenheit"])
    Returns:
        The current temperature at the specified location in the specified units, as a float.
    """
    return 22.  # A real function should probably actually get the temperature!

def get_current_wind_speed(location: str) -> float:
    """
    Get the current wind speed in km/h at a given location.
    
    Args:
        location: The location to get the temperature for, in the format "City, Country"
    Returns:
        The current wind speed at the given location in km/h, as a float.
    """
    return 6.  # A real function should probably actually get the wind speed!

tools = [get_current_temperature, get_current_wind_speed]

messages = [
  {"role": "system", "content": "You are a bot that responds to weather queries. You should reply with the unit used in the queried location."},
  {"role": "user", "content": "Hey, what's the temperature in Paris right now?"}
]

# Add a tool call and tool response to the history
tool_call_id = "abcdef123"  # Random ID, should be unique for each tool call
tool_call = {"name": "get_current_temperature", "arguments": {"location": "Paris, France", "unit": "celsius"}}
messages.append({"role": "assistant", "tool_calls": [{"id": tool_call_id, "type": "function", "function": tool_call}]})
messages.append({"role": "tool", "tool_call_id": tool_call_id, "name": "get_current_temperature", "content": "22.0"})

# Tokenize and generate a response
inputs = tokenizer.apply_chat_template(messages, tools=tools, add_generation_prompt=True, return_dict=True, return_tensors="pt")
inputs = {k: v.to(model.device) for k, v in inputs.items()}
out = model.generate(**inputs, max_new_tokens=128)
print(tokenizer.decode(out[0][len(inputs["input_ids"][0]):]))