Allow generating requirements_all.txt

homeassistant/components/sensor/rfxtrx.py

@@ -11,7 +11,6 @@ from collections import OrderedDict
 
 from homeassistant.const import (TEMP_CELCIUS)
 from homeassistant.helpers.entity import Entity
-from RFXtrx import SensorEvent
 import homeassistant.components.rfxtrx as rfxtrx
 from homeassistant.util import slugify
 
@@ -28,6 +27,7 @@ _LOGGER = logging.getLogger(__name__)
 
 def setup_platform(hass, config, add_devices_callback, discovery_info=None):
     """ Setup the RFXtrx platform. """
+    from RFXtrx import SensorEvent
 
     def sensor_update(event):
         """ Callback for sensor updates from the RFXtrx gateway. """

homeassistant/components/sensor/tellstick.py

@@ -9,9 +9,6 @@ https://home-assistant.io/components/sensor.tellstick/
 import logging
 from collections import namedtuple
 
-import tellcore.telldus as telldus
-import tellcore.constants as tellcore_constants
-
 from homeassistant.const import TEMP_CELCIUS
 from homeassistant.helpers.entity import Entity
 import homeassistant.util as util
@@ -24,6 +21,9 @@ REQUIREMENTS = ['tellcore-py==1.1.2']
 # pylint: disable=unused-argument
 def setup_platform(hass, config, add_devices, discovery_info=None):
     """ Sets up Tellstick sensors. """
+    import tellcore.telldus as telldus
+    import tellcore.constants as tellcore_constants
+
     sensor_value_descriptions = {
         tellcore_constants.TELLSTICK_TEMPERATURE:
         DatatypeDescription(

homeassistant/components/sensor/transmission.py

@@ -11,10 +11,6 @@ from datetime import timedelta
 from homeassistant.const import CONF_HOST, CONF_USERNAME, CONF_PASSWORD
 
 from homeassistant.helpers.entity import Entity
-# pylint: disable=no-name-in-module, import-error
-import transmissionrpc
-
-from transmissionrpc.error import TransmissionError
 
 import logging
 
@@ -33,6 +29,9 @@ _THROTTLED_REFRESH = None
 # pylint: disable=unused-argument
 def setup_platform(hass, config, add_devices, discovery_info=None):
     """ Sets up the Transmission sensors. """
+    import transmissionrpc
+    from transmissionrpc.error import TransmissionError
+
     host = config.get(CONF_HOST)
     username = config.get(CONF_USERNAME, None)
     password = config.get(CONF_PASSWORD, None)
@@ -97,6 +96,8 @@ class TransmissionSensor(Entity):
 
     def refresh_transmission_data(self):
         """ Calls the throttled Transmission refresh method. """
+        from transmissionrpc.error import TransmissionError
+
         if _THROTTLED_REFRESH is not None:
             try:
                 _THROTTLED_REFRESH()

homeassistant/components/sensor/zwave.py

@@ -8,8 +8,6 @@ at https://home-assistant.io/components/zwave/
 """
 # pylint: disable=import-error
 from homeassistant.helpers.event import track_point_in_time
-from openzwave.network import ZWaveNetwork
-from pydispatch import dispatcher
 import datetime
 import homeassistant.util.dt as dt_util
 import homeassistant.components.zwave as zwave
@@ -79,6 +77,9 @@ class ZWaveSensor(Entity):
     """ Represents a Z-Wave sensor. """
 
     def __init__(self, sensor_value):
+        from openzwave.network import ZWaveNetwork
+        from pydispatch import dispatcher
+
         self._value = sensor_value
         self._node = sensor_value.node