| import inspect |
| import traceback |
| from copy import deepcopy |
| from pprint import pformat |
| from types import GenericAlias |
| from typing import get_origin, Annotated |
|
|
| _TOOL_HOOKS = {} |
| _TOOL_DESCRIPTIONS = {} |
|
|
|
|
| def register_tool(func: callable): |
| tool_name = func.__name__ |
| tool_description = inspect.getdoc(func).strip() |
| python_params = inspect.signature(func).parameters |
| tool_params = [] |
| for name, param in python_params.items(): |
| annotation = param.annotation |
| if annotation is inspect.Parameter.empty: |
| raise TypeError(f"Parameter `{name}` missing type annotation") |
| if get_origin(annotation) != Annotated: |
| raise TypeError(f"Annotation type for `{name}` must be typing.Annotated") |
|
|
| typ, (description, required) = annotation.__origin__, annotation.__metadata__ |
| typ: str = str(typ) if isinstance(typ, GenericAlias) else typ.__name__ |
| if not isinstance(description, str): |
| raise TypeError(f"Description for `{name}` must be a string") |
| if not isinstance(required, bool): |
| raise TypeError(f"Required for `{name}` must be a bool") |
|
|
| tool_params.append({ |
| "name": name, |
| "description": description, |
| "type": typ, |
| "required": required |
| }) |
| tool_def = { |
| "name": tool_name, |
| "description": tool_description, |
| "params": tool_params |
| } |
|
|
| print("[registered tool] " + pformat(tool_def)) |
| _TOOL_HOOKS[tool_name] = func |
| _TOOL_DESCRIPTIONS[tool_name] = tool_def |
|
|
| return func |
|
|
|
|
| def dispatch_tool(tool_name: str, tool_params: dict) -> str: |
| if tool_name not in _TOOL_HOOKS: |
| return f"Tool `{tool_name}` not found. Please use a provided tool." |
| tool_call = _TOOL_HOOKS[tool_name] |
| try: |
| ret = tool_call(**tool_params) |
| except: |
| ret = traceback.format_exc() |
| return str(ret) |
|
|
|
|
| def get_tools() -> dict: |
| return deepcopy(_TOOL_DESCRIPTIONS) |
|
|
|
|
| |
|
|
| @register_tool |
| def random_number_generator( |
| seed: Annotated[int, 'The random seed used by the generator', True], |
| range: Annotated[tuple[int, int], 'The range of the generated numbers', True], |
| ) -> int: |
| """ |
| Generates a random number x, s.t. range[0] <= x < range[1] |
| """ |
| if not isinstance(seed, int): |
| raise TypeError("Seed must be an integer") |
| if not isinstance(range, tuple): |
| raise TypeError("Range must be a tuple") |
| if not isinstance(range[0], int) or not isinstance(range[1], int): |
| raise TypeError("Range must be a tuple of integers") |
|
|
| import random |
| return random.Random(seed).randint(*range) |
|
|
|
|
| @register_tool |
| def get_weather( |
| city_name: Annotated[str, 'The name of the city to be queried', True], |
| ) -> str: |
| """ |
| Get the current weather for `city_name` |
| """ |
|
|
| if not isinstance(city_name, str): |
| raise TypeError("City name must be a string") |
|
|
| key_selection = { |
| "current_condition": ["temp_C", "FeelsLikeC", "humidity", "weatherDesc", "observation_time"], |
| } |
| import requests |
| try: |
| resp = requests.get(f"https://wttr.in/{city_name}?format=j1") |
| resp.raise_for_status() |
| resp = resp.json() |
| ret = {k: {_v: resp[k][0][_v] for _v in v} for k, v in key_selection.items()} |
| except: |
| import traceback |
| ret = "Error encountered while fetching weather data!\n" + traceback.format_exc() |
|
|
| return str(ret) |
|
|
|
|
| if __name__ == "__main__": |
| print(dispatch_tool("get_weather", {"city_name": "beijing"})) |
| print(get_tools()) |
|
|
