Handle out-of-range timestamps in _format_data

tests/test_base_format.py

@@ -0,0 +1,24 @@
+from datetime import datetime
+
+from yahooquery.base import _YahooFinance
+
+
+def _base():
+    # Bypass __init__ so no network session is created; _format_data only
+    # needs an instance for its recursive calls.
+    return _YahooFinance.__new__(_YahooFinance)
+
+
+def test_format_data_out_of_range_timestamp_falls_back_to_raw():
+    base = _base()
+    data = {"startDate": 636977076120}
+    result = base._format_data(data, ["startDate"])
+    assert result["startDate"] == 636977076120
+
+
+def test_format_data_valid_timestamp_is_formatted():
+    base = _base()
+    data = {"startDate": 1700000000}
+    result = base._format_data(data, ["startDate"])
+    expected = datetime.fromtimestamp(1700000000).strftime("%Y-%m-%d %H:%M:%S")
+    assert result["startDate"] == expected

yahooquery/base.py

@@ -154,7 +154,7 @@ def _format_data(self, obj, dates):
                 else:
                     try:
                         obj[k] = datetime.fromtimestamp(v).strftime("%Y-%m-%d %H:%M:%S")
-                    except (TypeError, OSError):
+                    except (TypeError, OSError, ValueError):
                         obj[k] = v
             elif isinstance(v, dict):
                 if "raw" in v: