diff --git a/custom_components/sberdevices/api.py b/custom_components/sberdevices/api.py
index 14e54ba..f4418f0 100755
--- a/custom_components/sberdevices/api.py
+++ b/custom_components/sberdevices/api.py
@@ -1,5 +1,5 @@
-from datetime import datetime
 import tempfile
+from datetime import datetime
 
 from authlib.common.security import generate_token
 from authlib.integrations.httpx_client import AsyncOAuth2Client
@@ -82,7 +82,7 @@ async def authorize_by_url(self, url: str) -> bool:
                 code_verifier=self._verify_token,
             )
             return token is not None
-        except:
+        except Exception:
             return False
 
     async def fetch_home_token(self) -> str:
@@ -111,7 +111,7 @@ async def update_token(self) -> None:
             self._client.headers.update({"X-AUTH-jwt": token})
 
     async def request(
-        self, method: str, url: str, retry: bool = True, **kwargs
+            self, method: str, url: str, retry: bool = True, **kwargs
     ) -> dict[str, any]:
         await self.update_token()
 
@@ -132,7 +132,7 @@ async def get_device_tree(self) -> dict[str, any]:
         return (await self.request("GET", "/device_groups/tree"))["result"]
 
     # Cache
-    async def update_devices_cache(self) -> list[dict[str, any]]:
+    async def update_devices_cache(self):
         self._devices = extract_devices(await self.get_device_tree())
 
     def get_cached_devices(self) -> list[dict[str, any]]:
@@ -149,7 +149,7 @@ async def set_device_state(self, device_id: str, state: [dict[str, any]]) -> Non
                 "device_id": device_id,
                 "desired_state": state,
                 "timestamp": datetime.now().isoformat()
-                + "Z",  # 2023-12-01T17:00:35.537Z
+                             + "Z",  # 2023-12-01T17:00:35.537Z
             },
         )
 
@@ -205,8 +205,9 @@ def find_from_list(data: [dict[str, any]], key: str) -> dict[str, any] | None:
 def does_exist_in_list(data: [dict[str, any]], key: str) -> bool:
     return find_from_list(data, key) is not None
 
+
 def extract_devices(d: dict[str, any]) -> dict[str, any]:
     devices: dict[str, any] = {device["id"]: device for device in d["devices"]}
     for children in d["children"]:
         devices.update(extract_devices(children))
-    return devices
\ No newline at end of file
+    return devices
diff --git a/custom_components/sberdevices/config_flow.py b/custom_components/sberdevices/config_flow.py
index df9f269..35a5a49 100755
--- a/custom_components/sberdevices/config_flow.py
+++ b/custom_components/sberdevices/config_flow.py
@@ -1,12 +1,11 @@
 """Config flow for SberDevices integration."""
 from __future__ import annotations
-import asyncio
 
+import asyncio
 import logging
 from typing import Any
 
 import voluptuous as vol
-
 from homeassistant import config_entries
 from homeassistant.data_entry_flow import FlowResult
 
diff --git a/custom_components/sberdevices/light.py b/custom_components/sberdevices/light.py
index 887fe72..1bd0afb 100755
--- a/custom_components/sberdevices/light.py
+++ b/custom_components/sberdevices/light.py
@@ -21,27 +21,31 @@
 from .api import DeviceAPI, HomeAPI
 from .const import DOMAIN
 
+
 # hardcode xd
 def get_color_temp_range(device_type: str) -> (int, int):
     match device_type:
-        case "bulb": # Sber A60 bulb
-            return (2700, 6500)
-        case "ledstrip": # SBDV-00033 led strip
-            return (2000, 6500)
-    return (2700, 6500)
+        case "ledstrip":  # SBDV-00033 led strip
+            return 2000, 6500
+        case "bulb":  # Sber A60 bulb
+            return 2700, 6500
+        case _:
+            return 2700, 6500
+
 
 H_RANGE = (0, 360)
 S_RANGE = (0, 100)
 
 
 async def async_setup_entry(
-    hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
+        hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
 ) -> None:
     home: HomeAPI = hass.data[DOMAIN][entry.entry_id]["home"]
     await home.update_devices_cache()
     async_add_entities(
         [
-            SberLightEntity(DeviceAPI(home, device["id"]), "ledstrip" if "ledstrip" in device["image_set_type"] else "bulb")
+            SberLightEntity(DeviceAPI(home, device["id"]),
+                            "ledstrip" if "ledstrip" in device["image_set_type"] else "bulb")
             for device in home.get_cached_devices().values()
             if "bulb" in device["image_set_type"] or "ledstrip" in device["image_set_type"]  # TODO: lutiy kostyl'
         ]
@@ -88,28 +92,29 @@ def is_on(self) -> bool:
 
     @property
     def supported_color_modes(self) -> set[ColorMode]:
-        m = {
+        modes = {
             "light_brightness": ColorMode.BRIGHTNESS,
             "light_colour_temp": ColorMode.COLOR_TEMP,
         }
-        v = {m[k] for k in m if self._api.get_attribute(k) is not None}
+        values = {modes[k] for k in modes if self._api.get_attribute(k) is not None}
         light_mode = self._api.get_attribute("light_mode")["enum_values"]["values"]
         if "white" in light_mode:
-            v.add(ColorMode.WHITE)
+            values.add(ColorMode.WHITE)
         if "colour" in light_mode:
-            v.add(ColorMode.HS)
+            values.add(ColorMode.HS)
 
-        return v
+        return values
 
     @property
     def color_mode(self) -> ColorMode:
         mode = self._api.get_state("light_mode")["enum_value"]
-        if mode == "white":
-            return ColorMode.COLOR_TEMP
-        elif mode == "colour":
-            return ColorMode.HS
-        else:
-            return ColorMode.UNKNOWN
+        match mode:
+            case "white":
+                return ColorMode.COLOR_TEMP
+            case "colour":
+                return ColorMode.HS
+            case _:
+                return ColorMode.UNKNOWN
 
     @property
     def brightness_range(self) -> tuple[int, int]:
@@ -152,7 +157,7 @@ def color_temp_range(self) -> tuple[int, int]:
         )
 
     @property
-    def color_temp_kelvin(self) -> int:
+    def color_temp_kelvin(self) -> int | None:
         if ColorMode.COLOR_TEMP not in self.supported_color_modes:
             return None
 
@@ -164,10 +169,13 @@ def color_temp_kelvin(self) -> int:
     @property
     def color_range(self) -> dict[str, tuple[int, int]]:
         colour_values = self._api.get_attribute("light_colour")["color_values"]
+        h = colour_values["h"]
+        s = colour_values["s"]
+        v = colour_values["v"]
         return {
-            "h": (colour_values["h"]["min"], colour_values["h"]["max"]),
-            "s": (colour_values["s"]["min"], colour_values["s"]["max"]),
-            "v": (colour_values["v"]["min"], colour_values["v"]["max"]),
+            "h": (h["min"], h["max"]),
+            "s": (s["min"], s["max"]),
+            "v": (v["min"], v["max"]),
         }
 
     @property
@@ -256,7 +264,7 @@ async def async_turn_on(self, **kwargs) -> None:
 
         brightness = kwargs.get(ATTR_BRIGHTNESS) or kwargs.get(ATTR_WHITE)
         if (
-            self.color_mode != ColorMode.HS or ATTR_WHITE in kwargs
+                self.color_mode != ColorMode.HS or ATTR_WHITE in kwargs
         ) and brightness is not None:
             states.extend(
                 (
diff --git a/custom_components/sberdevices/translations/en.json b/custom_components/sberdevices/translations/en.json
index 4c14b21..2c7c352 100755
--- a/custom_components/sberdevices/translations/en.json
+++ b/custom_components/sberdevices/translations/en.json
@@ -1,26 +1,26 @@
 {
-    "config": {
-        "abort": {
-            "already_configured": "Device is already configured"
+  "config": {
+    "abort": {
+      "already_configured": "Device is already configured"
+    },
+    "error": {
+      "cannot_connect": "Failed to connect",
+      "invalid_auth": "Invalid authentication",
+      "unknown": "Unexpected error"
+    },
+    "step": {
+      "user": {
+        "title": "Wait 10 seconds..."
+      },
+      "finish": {
+        "data": {
+          "url": "URL"
         },
-        "error": {
-            "cannot_connect": "Failed to connect",
-            "invalid_auth": "Invalid authentication",
-            "unknown": "Unexpected error"
+        "data_description": {
+          "url": "Redirect URL from the developer console"
         },
-        "step": {
-            "user": {
-                "title": "Wait 10 seconds..."
-            },
-            "finish": {
-                "data": {
-                    "url": "URL"
-                },
-                "data_description": {
-                    "url": "Redirect URL from the developer console"
-                },
-                "title": "Authorization"
-            }
-        }
+        "title": "Authorization"
+      }
     }
+  }
 }
\ No newline at end of file
diff --git a/custom_components/sberdevices/translations/ru.json b/custom_components/sberdevices/translations/ru.json
new file mode 100755
index 0000000..0acc5bc
--- /dev/null
+++ b/custom_components/sberdevices/translations/ru.json
@@ -0,0 +1,26 @@
+{
+  "config": {
+    "abort": {
+      "already_configured": "Устройство уже настроено"
+    },
+    "error": {
+      "cannot_connect": "Не удалось подключиться",
+      "invalid_auth": "Неверные данные авторизации",
+      "unknown": "Неизвестная ошибка"
+    },
+    "step": {
+      "user": {
+        "title": "Подождите 10 секунд..."
+      },
+      "finish": {
+        "data": {
+          "url": "URL"
+        },
+        "data_description": {
+          "url": "URL перенаправления из консоли разработчика"
+        },
+        "title": "Авторизация"
+      }
+    }
+  }
+}
\ No newline at end of file