diff --git a/esphome/components/i2c/__init__.py b/esphome/components/i2c/__init__.py
index 19efda0b49..de3f2be674 100644
--- a/esphome/components/i2c/__init__.py
+++ b/esphome/components/i2c/__init__.py
@@ -183,7 +183,7 @@ async def to_code(config):
     if CORE.using_zephyr:
         zephyr_add_prj_conf("I2C", True)
         i2c = "i2c0"
-        if zephyr_data()[KEY_BOARD] in ["xiao_ble"]:
+        if zephyr_data()[KEY_BOARD] == "xiao_ble":
             i2c = "i2c1"
         zephyr_add_overlay(
             f"""
diff --git a/esphome/components/zephyr/__init__.py b/esphome/components/zephyr/__init__.py
index 8e3ae86bbe..43d5cebebb 100644
--- a/esphome/components/zephyr/__init__.py
+++ b/esphome/components/zephyr/__init__.py
@@ -213,9 +213,10 @@ def copy_files():
         zephyr_data()[KEY_OVERLAY],
     )
 
-    if zephyr_data()[KEY_BOOTLOADER] == BOOTLOADER_MCUBOOT or zephyr_data()[
-        KEY_BOARD
-    ] in ["xiao_ble"]:
+    if (
+        zephyr_data()[KEY_BOOTLOADER] == BOOTLOADER_MCUBOOT
+        or zephyr_data()[KEY_BOARD] == "xiao_ble"
+    ):
         fake_board_manifest = """
 {
     "frameworks": [
diff --git a/esphome/enum.py b/esphome/enum.py
index 0fe30cf92a..cf0d8b645b 100644
--- a/esphome/enum.py
+++ b/esphome/enum.py
@@ -2,19 +2,7 @@
 
 from __future__ import annotations
 
-from enum import Enum
-from typing import Any
+from enum import StrEnum as _StrEnum
 
-
-class StrEnum(str, Enum):
-    """Partial backport of Python 3.11's StrEnum for our basic use cases."""
-
-    def __new__(cls, value: str, *args: Any, **kwargs: Any) -> StrEnum:
-        """Create a new StrEnum instance."""
-        if not isinstance(value, str):
-            raise TypeError(f"{value!r} is not a string")
-        return super().__new__(cls, value, *args, **kwargs)
-
-    def __str__(self) -> str:
-        """Return self.value."""
-        return str(self.value)
+# Re-export StrEnum from standard library for backwards compatibility
+StrEnum = _StrEnum
diff --git a/esphome/wizard.py b/esphome/wizard.py
index f5e8a1e462..4b74847996 100644
--- a/esphome/wizard.py
+++ b/esphome/wizard.py
@@ -470,7 +470,7 @@ def wizard(path: Path) -> int:
     sleep(1)
 
     # Do not create wifi if the board does not support it
-    if board not in ["rpipico"]:
+    if board != "rpipico":
         safe_print_step(3, WIFI_BIG)
         safe_print("In this step, I'm going to create the configuration for WiFi.")
         safe_print()
diff --git a/tests/unit_tests/test_writer.py b/tests/unit_tests/test_writer.py
index 08b758c97e..134b63df4a 100644
--- a/tests/unit_tests/test_writer.py
+++ b/tests/unit_tests/test_writer.py
@@ -1574,8 +1574,8 @@ def test_copy_src_tree_writes_build_info_files(
     mock_component.resources = mock_resources
 
     # Setup mocks
-    mock_core.relative_src_path.side_effect = lambda *args: src_path.joinpath(*args)
-    mock_core.relative_build_path.side_effect = lambda *args: build_path.joinpath(*args)
+    mock_core.relative_src_path.side_effect = src_path.joinpath
+    mock_core.relative_build_path.side_effect = build_path.joinpath
     mock_core.defines = []
     mock_core.config_hash = 0xDEADBEEF
     mock_core.comment = "Test comment"
@@ -1649,8 +1649,8 @@ def test_copy_src_tree_detects_config_hash_change(
     build_info_h_path.write_text("// old build_info_data.h")
 
     # Setup mocks
-    mock_core.relative_src_path.side_effect = lambda *args: src_path.joinpath(*args)
-    mock_core.relative_build_path.side_effect = lambda *args: build_path.joinpath(*args)
+    mock_core.relative_src_path.side_effect = src_path.joinpath
+    mock_core.relative_build_path.side_effect = build_path.joinpath
     mock_core.defines = []
     mock_core.config_hash = 0xDEADBEEF  # Different from existing
     mock_core.comment = ""
@@ -1711,8 +1711,8 @@ def test_copy_src_tree_detects_version_change(
     build_info_h_path.write_text("// old build_info_data.h")
 
     # Setup mocks
-    mock_core.relative_src_path.side_effect = lambda *args: src_path.joinpath(*args)
-    mock_core.relative_build_path.side_effect = lambda *args: build_path.joinpath(*args)
+    mock_core.relative_src_path.side_effect = src_path.joinpath
+    mock_core.relative_build_path.side_effect = build_path.joinpath
     mock_core.defines = []
     mock_core.config_hash = 0xDEADBEEF
     mock_core.comment = ""
@@ -1761,8 +1761,8 @@ def test_copy_src_tree_handles_invalid_build_info_json(
     build_info_h_path.write_text("// old build_info_data.h")
 
     # Setup mocks
-    mock_core.relative_src_path.side_effect = lambda *args: src_path.joinpath(*args)
-    mock_core.relative_build_path.side_effect = lambda *args: build_path.joinpath(*args)
+    mock_core.relative_src_path.side_effect = src_path.joinpath
+    mock_core.relative_build_path.side_effect = build_path.joinpath
     mock_core.defines = []
     mock_core.config_hash = 0xDEADBEEF
     mock_core.comment = ""
@@ -1835,8 +1835,8 @@ def test_copy_src_tree_build_info_timestamp_behavior(
     mock_component.resources = mock_resources
 
     # Setup mocks
-    mock_core.relative_src_path.side_effect = lambda *args: src_path.joinpath(*args)
-    mock_core.relative_build_path.side_effect = lambda *args: build_path.joinpath(*args)
+    mock_core.relative_src_path.side_effect = src_path.joinpath
+    mock_core.relative_build_path.side_effect = build_path.joinpath
     mock_core.defines = []
     mock_core.config_hash = 0xDEADBEEF
     mock_core.comment = ""
@@ -1930,8 +1930,8 @@ def test_copy_src_tree_detects_removed_source_file(
     existing_file.write_text("// test file")
 
     # Setup mocks - no components, so the file should be removed
-    mock_core.relative_src_path.side_effect = lambda *args: src_path.joinpath(*args)
-    mock_core.relative_build_path.side_effect = lambda *args: build_path.joinpath(*args)
+    mock_core.relative_src_path.side_effect = src_path.joinpath
+    mock_core.relative_build_path.side_effect = build_path.joinpath
     mock_core.defines = []
     mock_core.config_hash = 0xDEADBEEF
     mock_core.comment = ""
@@ -1992,8 +1992,8 @@ def test_copy_src_tree_ignores_removed_generated_file(
     build_info_h.write_text("// old generated file")
 
     # Setup mocks
-    mock_core.relative_src_path.side_effect = lambda *args: src_path.joinpath(*args)
-    mock_core.relative_build_path.side_effect = lambda *args: build_path.joinpath(*args)
+    mock_core.relative_src_path.side_effect = src_path.joinpath
+    mock_core.relative_build_path.side_effect = build_path.joinpath
     mock_core.defines = []
     mock_core.config_hash = 0xDEADBEEF
     mock_core.comment = ""