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60 lines
1.9 KiB
Python
60 lines
1.9 KiB
Python
"""
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Adapted from https://github.com/venuv/langchain_yt_tools
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CustomYTSearchTool searches YouTube videos related to a person
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and returns a specified number of video URLs.
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Input to this tool should be a comma separated list,
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- the first part contains a person name
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- and the second(optional) a number that is the
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maximum number of video results to return
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"""
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import json
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from typing import Optional
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from langchain.callbacks.manager import (
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AsyncCallbackManagerForToolRun,
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CallbackManagerForToolRun,
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)
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from langchain.tools import BaseTool
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class YouTubeSearchTool(BaseTool):
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name = "youtube_search"
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description = (
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"search for youtube videos associated with a person. "
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"the input to this tool should be a comma separated list, "
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"the first part contains a person name and the second a "
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"number that is the maximum number of video results "
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"to return aka num_results. the second part is optional"
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)
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def _search(self, person: str, num_results: int) -> str:
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from youtube_search import YoutubeSearch
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results = YoutubeSearch(person, num_results).to_json()
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data = json.loads(results)
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url_suffix_list = [video["url_suffix"] for video in data["videos"]]
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return str(url_suffix_list)
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def _run(
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self,
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query: str,
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run_manager: Optional[CallbackManagerForToolRun] = None,
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) -> str:
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"""Use the tool."""
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values = query.split(",")
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person = values[0]
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if len(values) > 1:
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num_results = int(values[1])
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else:
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num_results = 2
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return self._search(person, num_results)
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async def _arun(
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self,
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query: str,
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run_manager: Optional[AsyncCallbackManagerForToolRun] = None,
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) -> str:
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"""Use the tool asynchronously."""
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raise NotImplementedError("YouTubeSearchTool does not yet support async")
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