Fix missing pandas import in y_finance bulk indicators

tests/test_y_finance_bulk_indicator.py

@@ -0,0 +1,39 @@
+import importlib
+import sys
+import types
+import unittest
+from unittest.mock import patch
+
+import pandas as pd
+
+
+class YFinanceBulkIndicatorTests(unittest.TestCase):
+    def test_bulk_indicator_maps_nan_to_na(self):
+        fake_stockstats = types.ModuleType("stockstats")
+        fake_stockstats.wrap = lambda df: df
+
+        with patch.dict(sys.modules, {"stockstats": fake_stockstats}):
+            sys.modules.pop("tradingagents.dataflows.stockstats_utils", None)
+            sys.modules.pop("tradingagents.dataflows.y_finance", None)
+
+            try:
+                y_finance = importlib.import_module("tradingagents.dataflows.y_finance")
+                sample_df = pd.DataFrame(
+                    {
+                        "Date": pd.to_datetime(["2024-01-02", "2024-01-03"]),
+                        "rsi": [float("nan"), 55.5],
+                    }
+                )
+
+                with patch.object(y_finance, "load_ohlcv", return_value=sample_df):
+                    result = y_finance._get_stock_stats_bulk("AAPL", "rsi", "2024-01-03")
+            finally:
+                sys.modules.pop("tradingagents.dataflows.stockstats_utils", None)
+                sys.modules.pop("tradingagents.dataflows.y_finance", None)
+
+        self.assertEqual(result["2024-01-02"], "N/A")
+        self.assertEqual(result["2024-01-03"], "55.5")
+
+
+if __name__ == "__main__":
+    unittest.main()

tradingagents/dataflows/y_finance.py

@@ -1,6 +1,7 @@
 from typing import Annotated
 from datetime import datetime
 from dateutil.relativedelta import relativedelta
+import pandas as pd
 import yfinance as yf
 import os
 from .stockstats_utils import StockstatsUtils, _clean_dataframe, yf_retry, load_ohlcv, filter_financials_by_date
@@ -418,4 +419,4 @@ def get_insider_transactions(
         return header + csv_string
         
     except Exception as e:
-        return f"Error retrieving insider transactions for {ticker}: {str(e)}"
+        return f"Error retrieving insider transactions for {ticker}: {str(e)}"