diff --git a/homeassistant/components/fritz/device_tracker.py b/homeassistant/components/fritz/device_tracker.py
index c2b1e3ab54e..ab4deec96f7 100644
--- a/homeassistant/components/fritz/device_tracker.py
+++ b/homeassistant/components/fritz/device_tracker.py
@@ -4,13 +4,13 @@ import logging
 from fritzconnection import FritzHosts  # pylint: disable=import-error
 import voluptuous as vol
 
-import homeassistant.helpers.config_validation as cv
 from homeassistant.components.device_tracker import (
     DOMAIN,
     PLATFORM_SCHEMA,
     DeviceScanner,
 )
 from homeassistant.const import CONF_HOST, CONF_PASSWORD, CONF_USERNAME
+import homeassistant.helpers.config_validation as cv
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/components/fritzbox/__init__.py b/homeassistant/components/fritzbox/__init__.py
index a053bc6c7ca..40aa3a881d1 100644
--- a/homeassistant/components/fritzbox/__init__.py
+++ b/homeassistant/components/fritzbox/__init__.py
@@ -1,9 +1,9 @@
 """Support for AVM Fritz!Box smarthome devices."""
 import logging
 
+from pyfritzhome import Fritzhome, LoginError
 import voluptuous as vol
 
-import homeassistant.helpers.config_validation as cv
 from homeassistant.const import (
     CONF_DEVICES,
     CONF_HOST,
@@ -12,6 +12,7 @@ from homeassistant.const import (
     EVENT_HOMEASSISTANT_STOP,
 )
 from homeassistant.helpers import discovery
+import homeassistant.helpers.config_validation as cv
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -52,7 +53,6 @@ CONFIG_SCHEMA = vol.Schema(
 
 def setup(hass, config):
     """Set up the fritzbox component."""
-    from pyfritzhome import Fritzhome, LoginError
 
     fritz_list = []
 
diff --git a/homeassistant/components/fritzbox_netmonitor/sensor.py b/homeassistant/components/fritzbox_netmonitor/sensor.py
index 92a29e37c51..0a82c5e29c3 100644
--- a/homeassistant/components/fritzbox_netmonitor/sensor.py
+++ b/homeassistant/components/fritzbox_netmonitor/sensor.py
@@ -1,18 +1,18 @@
 """Support for monitoring an AVM Fritz!Box router."""
-import logging
 from datetime import timedelta
-from requests.exceptions import RequestException
+import logging
 
 from fritzconnection import FritzStatus  # pylint: disable=import-error
 from fritzconnection.fritzconnection import (  # pylint: disable=import-error
     FritzConnectionException,
 )
+from requests.exceptions import RequestException
 import voluptuous as vol
 
 from homeassistant.components.sensor import PLATFORM_SCHEMA
-from homeassistant.const import CONF_NAME, CONF_HOST, STATE_UNAVAILABLE
-from homeassistant.helpers.entity import Entity
+from homeassistant.const import CONF_HOST, CONF_NAME, STATE_UNAVAILABLE
 import homeassistant.helpers.config_validation as cv
+from homeassistant.helpers.entity import Entity
 from homeassistant.util import Throttle
 
 _LOGGER = logging.getLogger(__name__)
diff --git a/homeassistant/components/fritzdect/switch.py b/homeassistant/components/fritzdect/switch.py
index dcb700d6636..cc629c54dc3 100644
--- a/homeassistant/components/fritzdect/switch.py
+++ b/homeassistant/components/fritzdect/switch.py
@@ -1,20 +1,21 @@
 """Support for FRITZ!DECT Switches."""
 import logging
 
-from requests.exceptions import RequestException, HTTPError
-
+from fritzhome.fritz import FritzBox
+from requests.exceptions import HTTPError, RequestException
 import voluptuous as vol
 
-from homeassistant.components.switch import SwitchDevice, PLATFORM_SCHEMA
+from homeassistant.components.switch import PLATFORM_SCHEMA, SwitchDevice
 from homeassistant.const import (
+    ATTR_TEMPERATURE,
     CONF_HOST,
     CONF_PASSWORD,
     CONF_USERNAME,
-    POWER_WATT,
     ENERGY_KILO_WATT_HOUR,
+    POWER_WATT,
+    TEMP_CELSIUS,
 )
 import homeassistant.helpers.config_validation as cv
-from homeassistant.const import TEMP_CELSIUS, ATTR_TEMPERATURE
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -42,7 +43,6 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
 
 def setup_platform(hass, config, add_entities, discovery_info=None):
     """Add all switches connected to Fritz Box."""
-    from fritzhome.fritz import FritzBox
 
     host = config.get(CONF_HOST)
     username = config.get(CONF_USERNAME)