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