community: Fix YahooFinanceNewsTool to handle updated yfinance data structure

libs/community/langchain_community/tools/yahoo_finance_news.py

@@ -36,7 +36,16 @@ def _run(
         query: str,
         run_manager: Optional[CallbackManagerForToolRun] = None,
     ) -> str:
-        """Use the Yahoo Finance News tool."""
+        """
+        Use the Yahoo Finance News tool.
+
+        Args:
+            query: Company ticker symbol (e.g., 'AAPL' for Apple).
+            run_manager: Optional callback manager.
+
+        Returns:
+            str: Formatted news results or error message.
+        """
         try:
             import yfinance
         except ImportError:
@@ -53,7 +62,11 @@ def _run(
 
         links = []
         try:
-            links = [n["link"] for n in company.news if n["type"] == "STORY"]
+            links = [
+                n["content"]["canonicalUrl"]["url"]
+                for n in company.news
+                if n["content"]["contentType"] == "STORY"
+            ]
         except (HTTPError, ReadTimeout, ConnectionError):
             if not links:
                 return f"No news found for company that searched with {query} ticker."
@@ -69,8 +82,9 @@ def _run(
     @staticmethod
     def _format_results(docs: Iterable[Document], query: str) -> str:
         doc_strings = [
-            "\n".join([doc.metadata["title"], doc.metadata["description"]])
+            "\n".join([doc.metadata["title"], doc.metadata.get("description", "")])
             for doc in docs
-            if query in doc.metadata["description"] or query in doc.metadata["title"]
+            if query in doc.metadata.get("description", "")
+            or query in doc.metadata["title"]
         ]
         return "\n\n".join(doc_strings)

libs/community/tests/integration_tests/tools/test_yahoo_finance_news.py

@@ -9,7 +9,7 @@
 def test_success() -> None:
     """Test that the tool runs successfully."""
     tool = YahooFinanceNewsTool()
-    query = "Microsoft"
+    query = "AAPL"
     result = tool.run(query)
     assert result is not None
     assert f"Company ticker {query} not found." not in result