From c8d241a861c257dbb02ae5a7e52871cdeaad1b32 Mon Sep 17 00:00:00 2001
From: cmp0xff <cmp0xff@gmail.com>
Date: Mon, 23 Jun 2025 15:14:34 +0200
Subject: [PATCH] fix: assign empty and tuple

---
 pandas-stubs/_typing.pyi | 4 ++--
 tests/test_frame.py      | 9 ++++++++-
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/pandas-stubs/_typing.pyi b/pandas-stubs/_typing.pyi
index 20c6849e8..5cef91fde 100644
--- a/pandas-stubs/_typing.pyi
+++ b/pandas-stubs/_typing.pyi
@@ -998,8 +998,8 @@ TimeZones: TypeAlias = str | tzinfo | None | int
 IntoColumn: TypeAlias = (
     AnyArrayLike
     | Scalar
-    | Callable[[DataFrame], AnyArrayLike | Scalar | list[Scalar] | range]
-    | list[Scalar]
+    | Callable[[DataFrame], AnyArrayLike | Scalar | Sequence[Scalar] | range]
+    | Sequence[Scalar]
     | range
     | None
 )
diff --git a/tests/test_frame.py b/tests/test_frame.py
index d58bd7f89..ffd85d609 100644
--- a/tests/test_frame.py
+++ b/tests/test_frame.py
@@ -317,7 +317,11 @@ def test_types_assign() -> None:
     df = pd.DataFrame({"a": [1, 2, 3]})
     check(
         assert_type(
-            df.assign(b=lambda df: range(len(df)), c=lambda _: [10, 20, 30]),
+            df.assign(
+                b=lambda df: range(len(df)),
+                c=lambda _: [10, 20, 30],
+                d=lambda _: (10, 20, 30),
+            ),
             pd.DataFrame,
         ),
         pd.DataFrame,
@@ -327,6 +331,9 @@ def test_types_assign() -> None:
         pd.DataFrame,
     )
 
+    df = pd.DataFrame()
+    check(assert_type(df.assign(a=[], b=()), pd.DataFrame), pd.DataFrame)
+
 
 def test_assign() -> None:
     df = pd.DataFrame({"a": [1, 2, 3], 1: [4, 5, 6]})