tools.py

from langchain_community.tools import DuckDuckGoSearchResults

web_search = DuckDuckGoSearchResults()

from langchain_community.tools import WikipediaQueryRun
from langchain_community.utilities import WikipediaAPIWrapper

wikipedia = WikipediaQueryRun(api_wrapper=WikipediaAPIWrapper(lang="en", doc_content_chars_max=10000))

tools = [
    wikipedia,
    web_search
]