diff --git a/homeassistant/components/darksky/sensor.py b/homeassistant/components/darksky/sensor.py
index 82aaccc9590..5b6da5d11bb 100644
--- a/homeassistant/components/darksky/sensor.py
+++ b/homeassistant/components/darksky/sensor.py
@@ -1,12 +1,11 @@
 """Support for Dark Sky weather service."""
-import logging
 from datetime import timedelta
+import logging
 
 import forecastio
-import voluptuous as vol
 from requests.exceptions import ConnectionError as ConnectError, HTTPError, Timeout
+import voluptuous as vol
 
-import homeassistant.helpers.config_validation as cv
 from homeassistant.components.sensor import PLATFORM_SCHEMA
 from homeassistant.const import (
     ATTR_ATTRIBUTION,
@@ -15,9 +14,10 @@ from homeassistant.const import (
     CONF_LONGITUDE,
     CONF_MONITORED_CONDITIONS,
     CONF_NAME,
-    UNIT_UV_INDEX,
     CONF_SCAN_INTERVAL,
+    UNIT_UV_INDEX,
 )
+import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity import Entity
 from homeassistant.util import Throttle
 
diff --git a/tests/components/darksky/test_sensor.py b/tests/components/darksky/test_sensor.py
index be66b74c186..bb716ed17ec 100644
--- a/tests/components/darksky/test_sensor.py
+++ b/tests/components/darksky/test_sensor.py
@@ -1,18 +1,17 @@
 """The tests for the Dark Sky platform."""
+from datetime import timedelta
 import re
 import unittest
 from unittest.mock import MagicMock, patch
-from datetime import timedelta
-
-from requests.exceptions import HTTPError
-import requests_mock
 
 import forecastio
+from requests.exceptions import HTTPError
+import requests_mock
 
 from homeassistant.components.darksky import sensor as darksky
 from homeassistant.setup import setup_component
 
-from tests.common import load_fixture, get_test_home_assistant, MockDependency
+from tests.common import MockDependency, get_test_home_assistant, load_fixture
 
 VALID_CONFIG_MINIMAL = {
     "sensor": {
diff --git a/tests/components/darksky/test_weather.py b/tests/components/darksky/test_weather.py
index ca328f45839..09ffe7bdc90 100644
--- a/tests/components/darksky/test_weather.py
+++ b/tests/components/darksky/test_weather.py
@@ -4,15 +4,14 @@ import unittest
 from unittest.mock import patch
 
 import forecastio
+from requests.exceptions import ConnectionError
 import requests_mock
 
-from requests.exceptions import ConnectionError
-
 from homeassistant.components import weather
-from homeassistant.util.unit_system import METRIC_SYSTEM
 from homeassistant.setup import setup_component
+from homeassistant.util.unit_system import METRIC_SYSTEM
 
-from tests.common import load_fixture, get_test_home_assistant
+from tests.common import get_test_home_assistant, load_fixture
 
 
 class TestDarkSky(unittest.TestCase):