From 12da2140cf93273875315823ba041eb4b5841ade Mon Sep 17 00:00:00 2001
From: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
Date: Fri, 21 Aug 2026 07:57:14 +1200
Subject: [PATCH] [core] Add type annotations to component Python (11/11)
 (#18348)

---
 esphome/components/animation/image.py                |  9 ++++++++-
 esphome/components/apds9960/__init__.py              |  3 ++-
 esphome/components/apds9960/binary_sensor.py         |  3 ++-
 esphome/components/apds9960/sensor.py                |  3 ++-
 esphome/components/emc2101/__init__.py               |  3 ++-
 esphome/components/emc2101/output/__init__.py        |  3 ++-
 esphome/components/emc2101/sensor/__init__.py        |  3 ++-
 esphome/components/graph/__init__.py                 |  9 ++++++---
 esphome/components/pylontech/__init__.py             |  3 ++-
 esphome/components/pylontech/sensor/__init__.py      |  3 ++-
 esphome/components/pylontech/text_sensor/__init__.py |  3 ++-
 esphome/components/rd03d/__init__.py                 |  3 ++-
 esphome/components/rd03d/binary_sensor.py            |  3 ++-
 esphome/components/rd03d/sensor.py                   |  3 ++-
 esphome/components/sun_gtil2/__init__.py             |  3 ++-
 esphome/components/sun_gtil2/sensor.py               |  3 ++-
 esphome/components/sun_gtil2/text_sensor.py          |  3 ++-
 esphome/components/teleinfo/__init__.py              |  3 ++-
 esphome/components/teleinfo/sensor/__init__.py       |  3 ++-
 esphome/components/teleinfo/text_sensor/__init__.py  |  3 ++-
 esphome/components/ufm01/__init__.py                 |  3 ++-
 esphome/components/ufm01/binary_sensor.py            |  3 ++-
 esphome/components/ufm01/sensor.py                   |  3 ++-
 esphome/components/xl9535/__init__.py                | 10 ++++++----
 24 files changed, 62 insertions(+), 29 deletions(-)

diff --git a/esphome/components/animation/image.py b/esphome/components/animation/image.py
index 73d428bd20..0265a350f7 100644
--- a/esphome/components/animation/image.py
+++ b/esphome/components/animation/image.py
@@ -6,6 +6,8 @@ from esphome.components.file.image import image_schema, write_image
 from esphome.components.image import Image_, validate_settings
 import esphome.config_validation as cv
 from esphome.const import CONF_ID, CONF_REPEAT
+from esphome.core import ID
+from esphome.cpp_generator import MockObj, TemplateArgsType
 from esphome.types import ConfigType
 
 CODEOWNERS = ["@syndlex"]
@@ -79,7 +81,12 @@ SET_FRAME_SCHEMA = cv.Schema(
 @automation.register_action(
     "animation.set_frame", SetFrameAction, SET_FRAME_SCHEMA, synchronous=True
 )
-async def animation_action_to_code(config, action_id, template_arg, args):
+async def animation_action_to_code(
+    config: ConfigType,
+    action_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
     paren = await cg.get_variable(config[CONF_ID])
     var = cg.new_Pvariable(action_id, template_arg, paren)
 
diff --git a/esphome/components/apds9960/__init__.py b/esphome/components/apds9960/__init__.py
index 99e37d3764..7ac1e5eb32 100644
--- a/esphome/components/apds9960/__init__.py
+++ b/esphome/components/apds9960/__init__.py
@@ -2,6 +2,7 @@ import esphome.codegen as cg
 from esphome.components import i2c
 import esphome.config_validation as cv
 from esphome.const import CONF_ID
+from esphome.types import ConfigType
 
 DEPENDENCIES = ["i2c"]
 MULTI_CONF = True
@@ -57,7 +58,7 @@ CONFIG_SCHEMA = (
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     var = cg.new_Pvariable(config[CONF_ID])
     await cg.register_component(var, config)
     await i2c.register_i2c_device(var, config)
diff --git a/esphome/components/apds9960/binary_sensor.py b/esphome/components/apds9960/binary_sensor.py
index 48e923ab2b..342f688249 100644
--- a/esphome/components/apds9960/binary_sensor.py
+++ b/esphome/components/apds9960/binary_sensor.py
@@ -2,6 +2,7 @@ import esphome.codegen as cg
 from esphome.components import binary_sensor
 import esphome.config_validation as cv
 from esphome.const import CONF_DIRECTION, DEVICE_CLASS_MOVING
+from esphome.types import ConfigType
 
 from . import APDS9960, CONF_APDS9960_ID
 
@@ -19,7 +20,7 @@ CONFIG_SCHEMA = binary_sensor.binary_sensor_schema(
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     hub = await cg.get_variable(config[CONF_APDS9960_ID])
     var = await binary_sensor.new_binary_sensor(config)
     func = getattr(hub, f"set_{config[CONF_DIRECTION]}_direction_binary_sensor")
diff --git a/esphome/components/apds9960/sensor.py b/esphome/components/apds9960/sensor.py
index 468eb0995f..a75fb79d1b 100644
--- a/esphome/components/apds9960/sensor.py
+++ b/esphome/components/apds9960/sensor.py
@@ -7,6 +7,7 @@ from esphome.const import (
     STATE_CLASS_MEASUREMENT,
     UNIT_PERCENT,
 )
+from esphome.types import ConfigType
 
 from . import APDS9960, CONF_APDS9960_ID
 
@@ -27,7 +28,7 @@ CONFIG_SCHEMA = sensor.sensor_schema(
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     hub = await cg.get_variable(config[CONF_APDS9960_ID])
     var = await sensor.new_sensor(config)
     func = getattr(hub, f"set_{config[CONF_TYPE]}_sensor")
diff --git a/esphome/components/emc2101/__init__.py b/esphome/components/emc2101/__init__.py
index 323195e99a..639847345f 100644
--- a/esphome/components/emc2101/__init__.py
+++ b/esphome/components/emc2101/__init__.py
@@ -2,6 +2,7 @@ import esphome.codegen as cg
 from esphome.components import i2c
 import esphome.config_validation as cv
 from esphome.const import CONF_ID, CONF_INVERTED, CONF_RESOLUTION
+from esphome.types import ConfigType
 
 CODEOWNERS = ["@ellull"]
 
@@ -68,7 +69,7 @@ CONFIG_SCHEMA = cv.All(
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     var = cg.new_Pvariable(config[CONF_ID])
     await cg.register_component(var, config)
     await i2c.register_i2c_device(var, config)
diff --git a/esphome/components/emc2101/output/__init__.py b/esphome/components/emc2101/output/__init__.py
index 586f0800a6..a8820345e2 100644
--- a/esphome/components/emc2101/output/__init__.py
+++ b/esphome/components/emc2101/output/__init__.py
@@ -2,6 +2,7 @@ import esphome.codegen as cg
 from esphome.components import output
 import esphome.config_validation as cv
 from esphome.const import CONF_ID
+from esphome.types import ConfigType
 
 from .. import CONF_EMC2101_ID, EMC2101_COMPONENT_SCHEMA, emc2101_ns
 
@@ -16,7 +17,7 @@ CONFIG_SCHEMA = EMC2101_COMPONENT_SCHEMA.extend(
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     paren = await cg.get_variable(config[CONF_EMC2101_ID])
     var = cg.new_Pvariable(config[CONF_ID], paren)
     await output.register_output(var, config)
diff --git a/esphome/components/emc2101/sensor/__init__.py b/esphome/components/emc2101/sensor/__init__.py
index b6a2c8a333..cc8901cf38 100644
--- a/esphome/components/emc2101/sensor/__init__.py
+++ b/esphome/components/emc2101/sensor/__init__.py
@@ -13,6 +13,7 @@ from esphome.const import (
     UNIT_PERCENT,
     UNIT_REVOLUTIONS_PER_MINUTE,
 )
+from esphome.types import ConfigType
 
 from .. import CONF_EMC2101_ID, EMC2101_COMPONENT_SCHEMA, emc2101_ns
 
@@ -53,7 +54,7 @@ CONFIG_SCHEMA = EMC2101_COMPONENT_SCHEMA.extend(
 ).extend(cv.polling_component_schema("60s"))
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     paren = await cg.get_variable(config[CONF_EMC2101_ID])
     var = cg.new_Pvariable(config[CONF_ID], paren)
     await cg.register_component(var, config)
diff --git a/esphome/components/graph/__init__.py b/esphome/components/graph/__init__.py
index 0749d7e2a3..1b99491f9c 100644
--- a/esphome/components/graph/__init__.py
+++ b/esphome/components/graph/__init__.py
@@ -29,6 +29,7 @@ from esphome.const import (
     CONF_X_GRID,
     CONF_Y_GRID,
 )
+from esphome.types import ConfigType
 
 CODEOWNERS = ["@synco"]
 
@@ -115,7 +116,9 @@ GRAPH_SCHEMA = cv.Schema(
 )
 
 
-def _relocate_fields_to_subfolder(config, subfolder, subschema):
+def _relocate_fields_to_subfolder(
+    config: ConfigType, subfolder: str, subschema: cv.Schema
+) -> ConfigType:
     fields = [k.schema for k in subschema.schema]
     fields.remove(CONF_ID)
     if subfolder in config:
@@ -138,7 +141,7 @@ def _relocate_fields_to_subfolder(config, subfolder, subschema):
     return config
 
 
-def _relocate_trace(config):
+def _relocate_trace(config: ConfigType) -> ConfigType:
     return _relocate_fields_to_subfolder(config, CONF_TRACES, GRAPH_TRACE_SCHEMA)
 
 
@@ -148,7 +151,7 @@ CONFIG_SCHEMA = cv.All(
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     var = cg.new_Pvariable(config[CONF_ID])
     cg.add(var.set_duration(config[CONF_DURATION]))
     cg.add(var.set_width(config[CONF_WIDTH]))
diff --git a/esphome/components/pylontech/__init__.py b/esphome/components/pylontech/__init__.py
index 82b98654a2..4ab606d9f9 100644
--- a/esphome/components/pylontech/__init__.py
+++ b/esphome/components/pylontech/__init__.py
@@ -4,6 +4,7 @@ import esphome.codegen as cg
 from esphome.components import uart
 import esphome.config_validation as cv
 from esphome.const import CONF_ID
+from esphome.types import ConfigType
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -41,7 +42,7 @@ CONFIG_SCHEMA = cv.All(
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     var = cg.new_Pvariable(config[CONF_ID])
     await cg.register_component(var, config)
     await uart.register_uart_device(var, config)
diff --git a/esphome/components/pylontech/sensor/__init__.py b/esphome/components/pylontech/sensor/__init__.py
index 450f663274..40391206fb 100644
--- a/esphome/components/pylontech/sensor/__init__.py
+++ b/esphome/components/pylontech/sensor/__init__.py
@@ -16,6 +16,7 @@ from esphome.const import (
     UNIT_PERCENT,
     UNIT_VOLT,
 )
+from esphome.types import ConfigType
 
 from .. import CONF_BATTERY, CONF_PYLONTECH_ID, PYLONTECH_COMPONENT_SCHEMA, pylontech_ns
 
@@ -90,7 +91,7 @@ CONFIG_SCHEMA = PYLONTECH_COMPONENT_SCHEMA.extend(
 ).extend({cv.Optional(marker): schema for marker, schema in TYPES.items()})
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     paren = await cg.get_variable(config[CONF_PYLONTECH_ID])
     bat = cg.new_Pvariable(config[CONF_ID], config[CONF_BATTERY])
 
diff --git a/esphome/components/pylontech/text_sensor/__init__.py b/esphome/components/pylontech/text_sensor/__init__.py
index f68ca10374..511eb7d542 100644
--- a/esphome/components/pylontech/text_sensor/__init__.py
+++ b/esphome/components/pylontech/text_sensor/__init__.py
@@ -2,6 +2,7 @@ import esphome.codegen as cg
 from esphome.components import text_sensor
 import esphome.config_validation as cv
 from esphome.const import CONF_ID
+from esphome.types import ConfigType
 
 from .. import CONF_BATTERY, CONF_PYLONTECH_ID, PYLONTECH_COMPONENT_SCHEMA, pylontech_ns
 
@@ -24,7 +25,7 @@ CONFIG_SCHEMA = PYLONTECH_COMPONENT_SCHEMA.extend(
 ).extend({cv.Optional(marker): text_sensor.text_sensor_schema() for marker in MARKERS})
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     paren = await cg.get_variable(config[CONF_PYLONTECH_ID])
     bat = cg.new_Pvariable(config[CONF_ID], config[CONF_BATTERY])
 
diff --git a/esphome/components/rd03d/__init__.py b/esphome/components/rd03d/__init__.py
index 52e9a2c09a..4fff41e4f6 100644
--- a/esphome/components/rd03d/__init__.py
+++ b/esphome/components/rd03d/__init__.py
@@ -2,6 +2,7 @@ import esphome.codegen as cg
 from esphome.components import uart
 import esphome.config_validation as cv
 from esphome.const import CONF_ID, CONF_THROTTLE
+from esphome.types import ConfigType
 
 CODEOWNERS = ["@jasstrong"]
 DEPENDENCIES = ["uart"]
@@ -38,7 +39,7 @@ FINAL_VALIDATE_SCHEMA = uart.final_validate_device_schema(
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     var = cg.new_Pvariable(config[CONF_ID])
     await cg.register_component(var, config)
     await uart.register_uart_device(var, config)
diff --git a/esphome/components/rd03d/binary_sensor.py b/esphome/components/rd03d/binary_sensor.py
index afb7527aa1..2c040d0560 100644
--- a/esphome/components/rd03d/binary_sensor.py
+++ b/esphome/components/rd03d/binary_sensor.py
@@ -2,6 +2,7 @@ import esphome.codegen as cg
 from esphome.components import binary_sensor
 import esphome.config_validation as cv
 from esphome.const import CONF_TARGET, DEVICE_CLASS_OCCUPANCY
+from esphome.types import ConfigType
 
 from . import CONF_RD03D_ID, RD03DComponent
 
@@ -26,7 +27,7 @@ CONFIG_SCHEMA = cv.Schema(
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     hub = await cg.get_variable(config[CONF_RD03D_ID])
 
     if target_config := config.get(CONF_TARGET):
diff --git a/esphome/components/rd03d/sensor.py b/esphome/components/rd03d/sensor.py
index 953d99c2da..d29656bab0 100644
--- a/esphome/components/rd03d/sensor.py
+++ b/esphome/components/rd03d/sensor.py
@@ -15,6 +15,7 @@ from esphome.const import (
     UNIT_DEGREES,
     UNIT_MILLIMETER,
 )
+from esphome.types import ConfigType
 
 from . import CONF_RD03D_ID, RD03DComponent
 
@@ -75,7 +76,7 @@ CONFIG_SCHEMA = cv.Schema(
 ).extend({cv.Optional(f"target_{i + 1}"): TARGET_SCHEMA for i in range(MAX_TARGETS)})
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     hub = await cg.get_variable(config[CONF_RD03D_ID])
 
     if target_count_config := config.get(CONF_TARGET_COUNT):
diff --git a/esphome/components/sun_gtil2/__init__.py b/esphome/components/sun_gtil2/__init__.py
index c7082794db..0f5ae27753 100644
--- a/esphome/components/sun_gtil2/__init__.py
+++ b/esphome/components/sun_gtil2/__init__.py
@@ -2,6 +2,7 @@ import esphome.codegen as cg
 from esphome.components import uart
 import esphome.config_validation as cv
 from esphome.const import CONF_ID
+from esphome.types import ConfigType
 
 CODEOWNERS = ["@Mat931"]
 MULTI_CONF = True
@@ -24,7 +25,7 @@ CONFIG_SCHEMA = (
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     var = cg.new_Pvariable(config[CONF_ID])
     await cg.register_component(var, config)
     await uart.register_uart_device(var, config)
diff --git a/esphome/components/sun_gtil2/sensor.py b/esphome/components/sun_gtil2/sensor.py
index 55c8195391..26435cfa67 100644
--- a/esphome/components/sun_gtil2/sensor.py
+++ b/esphome/components/sun_gtil2/sensor.py
@@ -13,6 +13,7 @@ from esphome.const import (
     UNIT_VOLT,
     UNIT_WATT,
 )
+from esphome.types import ConfigType
 
 from . import CONF_SUN_GTIL2_ID, SunGTIL2Component
 
@@ -73,7 +74,7 @@ CONFIG_SCHEMA = cv.All(
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     hub = await cg.get_variable(config[CONF_SUN_GTIL2_ID])
     if ac_voltage_config := config.get(CONF_AC_VOLTAGE):
         sens = await sensor.new_sensor(ac_voltage_config)
diff --git a/esphome/components/sun_gtil2/text_sensor.py b/esphome/components/sun_gtil2/text_sensor.py
index f74f89b3b4..eae69fb4df 100644
--- a/esphome/components/sun_gtil2/text_sensor.py
+++ b/esphome/components/sun_gtil2/text_sensor.py
@@ -2,6 +2,7 @@ import esphome.codegen as cg
 from esphome.components import text_sensor
 import esphome.config_validation as cv
 from esphome.const import CONF_STATE
+from esphome.types import ConfigType
 
 from . import CONF_SUN_GTIL2_ID, SunGTIL2Component
 
@@ -22,7 +23,7 @@ CONFIG_SCHEMA = cv.All(
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     hub = await cg.get_variable(config[CONF_SUN_GTIL2_ID])
     if state_config := config.get(CONF_STATE):
         sens = await text_sensor.new_text_sensor(state_config)
diff --git a/esphome/components/teleinfo/__init__.py b/esphome/components/teleinfo/__init__.py
index 87c7b9e85c..f9233511e1 100644
--- a/esphome/components/teleinfo/__init__.py
+++ b/esphome/components/teleinfo/__init__.py
@@ -2,6 +2,7 @@ import esphome.codegen as cg
 from esphome.components import uart
 import esphome.config_validation as cv
 from esphome.const import CONF_ID
+from esphome.types import ConfigType
 
 CODEOWNERS = ["@0hax"]
 MULTI_CONF = True
@@ -34,7 +35,7 @@ CONFIG_SCHEMA = (
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     var = cg.new_Pvariable(config[CONF_ID], config[CONF_HISTORICAL_MODE])
     await cg.register_component(var, config)
     await uart.register_uart_device(var, config)
diff --git a/esphome/components/teleinfo/sensor/__init__.py b/esphome/components/teleinfo/sensor/__init__.py
index 150484d97a..b51d4cb795 100644
--- a/esphome/components/teleinfo/sensor/__init__.py
+++ b/esphome/components/teleinfo/sensor/__init__.py
@@ -7,6 +7,7 @@ from esphome.const import (
     STATE_CLASS_TOTAL_INCREASING,
     UNIT_WATT_HOURS,
 )
+from esphome.types import ConfigType
 
 from .. import CONF_TAG_NAME, CONF_TELEINFO_ID, TELEINFO_LISTENER_SCHEMA, teleinfo_ns
 
@@ -22,7 +23,7 @@ CONFIG_SCHEMA = sensor.sensor_schema(
 ).extend(TELEINFO_LISTENER_SCHEMA)
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     var = cg.new_Pvariable(config[CONF_ID], config[CONF_TAG_NAME])
     await cg.register_component(var, config)
     await sensor.register_sensor(var, config)
diff --git a/esphome/components/teleinfo/text_sensor/__init__.py b/esphome/components/teleinfo/text_sensor/__init__.py
index 79fabd10d0..0b6ff11d74 100644
--- a/esphome/components/teleinfo/text_sensor/__init__.py
+++ b/esphome/components/teleinfo/text_sensor/__init__.py
@@ -1,6 +1,7 @@
 import esphome.codegen as cg
 from esphome.components import text_sensor
 from esphome.const import CONF_ID
+from esphome.types import ConfigType
 
 from .. import CONF_TAG_NAME, CONF_TELEINFO_ID, TELEINFO_LISTENER_SCHEMA, teleinfo_ns
 
@@ -13,7 +14,7 @@ CONFIG_SCHEMA = text_sensor.text_sensor_schema(TeleInfoTextSensor).extend(
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     var = cg.new_Pvariable(config[CONF_ID], config[CONF_TAG_NAME])
     await cg.register_component(var, config)
     await text_sensor.register_text_sensor(var, config)
diff --git a/esphome/components/ufm01/__init__.py b/esphome/components/ufm01/__init__.py
index 51cf3cfd91..ca0ea57796 100644
--- a/esphome/components/ufm01/__init__.py
+++ b/esphome/components/ufm01/__init__.py
@@ -2,6 +2,7 @@ import esphome.codegen as cg
 from esphome.components import uart
 import esphome.config_validation as cv
 from esphome.const import CONF_ID
+from esphome.types import ConfigType
 
 CODEOWNERS = ["@ljungqvist"]
 
@@ -34,7 +35,7 @@ FINAL_VALIDATE_SCHEMA = uart.final_validate_device_schema(
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     var = cg.new_Pvariable(config[CONF_ID])
     await cg.register_component(var, config)
     await uart.register_uart_device(var, config)
diff --git a/esphome/components/ufm01/binary_sensor.py b/esphome/components/ufm01/binary_sensor.py
index 92ae585d96..59583357e4 100644
--- a/esphome/components/ufm01/binary_sensor.py
+++ b/esphome/components/ufm01/binary_sensor.py
@@ -2,6 +2,7 @@ import esphome.codegen as cg
 from esphome.components import binary_sensor
 import esphome.config_validation as cv
 from esphome.const import DEVICE_CLASS_PROBLEM, ENTITY_CATEGORY_DIAGNOSTIC
+from esphome.types import ConfigType
 
 from . import CONF_UFM01_ID, UFM01Component
 
@@ -32,7 +33,7 @@ CONFIG_SCHEMA = {
 }
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     ufm01_component = await cg.get_variable(config[CONF_UFM01_ID])
 
     if ufc_chip_error_config := config.get(CONF_UFC_CHIP_ERROR):
diff --git a/esphome/components/ufm01/sensor.py b/esphome/components/ufm01/sensor.py
index 4dcd7ceebe..e3281f0b2d 100644
--- a/esphome/components/ufm01/sensor.py
+++ b/esphome/components/ufm01/sensor.py
@@ -13,6 +13,7 @@ from esphome.const import (
     UNIT_CUBIC_METER_PER_HOUR,
     UNIT_LITRE,
 )
+from esphome.types import ConfigType
 
 from . import CONF_UFM01_ID, UFM01Component
 
@@ -47,7 +48,7 @@ CONFIG_SCHEMA = cv.Schema(
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     ufm01_component = await cg.get_variable(config[CONF_UFM01_ID])
 
     if CONF_ACCUMULATED_FLOW in config:
diff --git a/esphome/components/xl9535/__init__.py b/esphome/components/xl9535/__init__.py
index 58ce4a30f8..5686b74173 100644
--- a/esphome/components/xl9535/__init__.py
+++ b/esphome/components/xl9535/__init__.py
@@ -10,6 +10,8 @@ from esphome.const import (
     CONF_NUMBER,
     CONF_OUTPUT,
 )
+from esphome.cpp_generator import MockObj
+from esphome.types import ConfigType
 
 CONF_XL9535 = "xl9535"
 
@@ -29,13 +31,13 @@ CONFIG_SCHEMA = (
 )
 
 
-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
     var = cg.new_Pvariable(config[CONF_ID])
     await cg.register_component(var, config)
     await i2c.register_i2c_device(var, config)
 
 
-def validate_mode(mode):
+def validate_mode(mode: ConfigType) -> ConfigType:
     if not (mode[CONF_INPUT] or mode[CONF_OUTPUT]) or (
         mode[CONF_INPUT] and mode[CONF_OUTPUT]
     ):
@@ -43,7 +45,7 @@ def validate_mode(mode):
     return mode
 
 
-def validate_pin(pin):
+def validate_pin(pin: int) -> int:
     if pin in (8, 9):
         raise cv.Invalid(f"pin {pin} doesn't exist")
     return pin
@@ -67,7 +69,7 @@ XL9535_PIN_SCHEMA = cv.All(
 
 
 @pins.PIN_SCHEMA_REGISTRY.register(CONF_XL9535, XL9535_PIN_SCHEMA)
-async def xl9535_pin_to_code(config):
+async def xl9535_pin_to_code(config: ConfigType) -> MockObj:
     var = cg.new_Pvariable(config[CONF_ID])
     parent = await cg.get_variable(config[CONF_XL9535])