From f7a09217a2582efda10defd82636d48cd2d19c4c Mon Sep 17 00:00:00 2001
From: cmp0xff <cmp0xff@gmail.com>
Date: Sat, 6 Dec 2025 22:13:20 +0100
Subject: [PATCH 1/2] #1519 #1524

---
 pandas-stubs/core/indexes/accessors.pyi |  4 +++-
 tests/series/test_properties.py         | 23 +++++++++++++++++------
 2 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/pandas-stubs/core/indexes/accessors.pyi b/pandas-stubs/core/indexes/accessors.pyi
index 477d96d21..77f66e393 100644
--- a/pandas-stubs/core/indexes/accessors.pyi
+++ b/pandas-stubs/core/indexes/accessors.pyi
@@ -444,7 +444,9 @@ class TimedeltaIndexProperties(
 @type_check_only
 class DtDescriptor:
     @overload
-    def __get__(self, instance: Series[Never], owner: type[Series]) -> Properties: ...
+    def __get__(
+        self, instance: Series[Never], owner: type[Series]
+    ) -> TimestampProperties | TimedeltaProperties | PeriodProperties: ...
     @overload
     def __get__(
         self, instance: Series[Timestamp], owner: type[Series]
diff --git a/tests/series/test_properties.py b/tests/series/test_properties.py
index 21ce75931..7993a9642 100644
--- a/tests/series/test_properties.py
+++ b/tests/series/test_properties.py
@@ -10,7 +10,6 @@
 from pandas.core.indexes.accessors import (
     DatetimeProperties,
     PeriodProperties,
-    Properties,
     TimedeltaProperties,
 )
 from pandas.core.indexes.interval import interval_range
@@ -49,12 +48,24 @@ def test_property_dt() -> None:
         PeriodProperties,
     )
 
+    df = DataFrame({"ts": [Timestamp(2025, 12, 6)], "td": [Timedelta(1, "s")]})
+    # python/mypy#19952: mypy gives Any
+    check(
+        assert_type(  # type: ignore[assert-type]
+            df["ts"].dt, "TimestampProperties | TimedeltaProperties | PeriodProperties"
+        ),
+        DatetimeProperties,
+    )
+    check(
+        assert_type(  # type: ignore[assert-type]
+            df["td"].dt, "TimestampProperties | TimedeltaProperties | PeriodProperties"
+        ),
+        TimedeltaProperties,
+    )
+
     if TYPE_CHECKING_INVALID_USAGE:
-        s = DataFrame({"a": [1]})["a"]
-        # python/mypy#19952: mypy believes Properties and its subclasses have a
-        # conflict and gives Any for s.dt
-        assert_type(s.dt, Properties)  # type: ignore[assert-type]
-        _1 = Series([1]).dt  # type: ignore[arg-type] # pyright: ignore[reportAttributeAccessIssue]
+        _0 = Series([1]).dt  # type: ignore[arg-type] # pyright: ignore[reportAttributeAccessIssue]
+        _1 = Series(["2025-01-01"]).dt  # type: ignore[arg-type] # pyright: ignore[reportAttributeAccessIssue]
 
 
 def test_property_array() -> None:

From 5e2215f73ca4f5ad145e27c858ab54fa703aa2a2 Mon Sep 17 00:00:00 2001
From: cmp0xff <cmp0xff@gmail.com>
Date: Mon, 8 Dec 2025 10:56:50 +0100
Subject: [PATCH 2/2] 
 https://github.com/pandas-dev/pandas-stubs/pull/1531#discussion_r2595486542

---
 pandas-stubs/core/indexes/accessors.pyi |  2 +-
 tests/series/test_properties.py         | 18 ++++++++++++++++--
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/pandas-stubs/core/indexes/accessors.pyi b/pandas-stubs/core/indexes/accessors.pyi
index 77f66e393..61d24d45c 100644
--- a/pandas-stubs/core/indexes/accessors.pyi
+++ b/pandas-stubs/core/indexes/accessors.pyi
@@ -446,7 +446,7 @@ class DtDescriptor:
     @overload
     def __get__(
         self, instance: Series[Never], owner: type[Series]
-    ) -> TimestampProperties | TimedeltaProperties | PeriodProperties: ...
+    ) -> CombinedDatetimelikeProperties: ...
     @overload
     def __get__(
         self, instance: Series[Timestamp], owner: type[Series]
diff --git a/tests/series/test_properties.py b/tests/series/test_properties.py
index 7993a9642..844336ab9 100644
--- a/tests/series/test_properties.py
+++ b/tests/series/test_properties.py
@@ -8,6 +8,7 @@
 from pandas.core.arrays.timedeltas import TimedeltaArray
 from pandas.core.frame import DataFrame
 from pandas.core.indexes.accessors import (
+    CombinedDatetimelikeProperties,
     DatetimeProperties,
     PeriodProperties,
     TimedeltaProperties,
@@ -52,17 +53,30 @@ def test_property_dt() -> None:
     # python/mypy#19952: mypy gives Any
     check(
         assert_type(  # type: ignore[assert-type]
-            df["ts"].dt, "TimestampProperties | TimedeltaProperties | PeriodProperties"
+            df["ts"].dt, CombinedDatetimelikeProperties
         ),
         DatetimeProperties,
     )
     check(
         assert_type(  # type: ignore[assert-type]
-            df["td"].dt, "TimestampProperties | TimedeltaProperties | PeriodProperties"
+            df["td"].dt, CombinedDatetimelikeProperties
         ),
         TimedeltaProperties,
     )
 
+    check(
+        assert_type(df["ts"].dt.year, "Series[int]"),  # type: ignore[assert-type]
+        Series,
+        np.integer,
+    )
+    check(
+        assert_type(  # type: ignore[assert-type]
+            df["td"].dt.total_seconds(), "Series[float]"
+        ),
+        Series,
+        np.floating,
+    )
+
     if TYPE_CHECKING_INVALID_USAGE:
         _0 = Series([1]).dt  # type: ignore[arg-type] # pyright: ignore[reportAttributeAccessIssue]
         _1 = Series(["2025-01-01"]).dt  # type: ignore[arg-type] # pyright: ignore[reportAttributeAccessIssue]