Update/add docstrings (PEP257)

homeassistant/components/sensor/command_sensor.py

@@ -1,6 +1,4 @@
 """
-homeassistant.components.sensor.command_sensor
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Allows to configure custom shell commands to turn a value for a sensor.
 
 For more details about this platform, please refer to the documentation at
@@ -24,7 +22,7 @@ MIN_TIME_BETWEEN_UPDATES = timedelta(seconds=60)
 
 # pylint: disable=unused-argument
 def setup_platform(hass, config, add_devices_callback, discovery_info=None):
-    """ Add the Command Sensor. """
+    """Add the Command Sensor."""
 
     if config.get('command') is None:
         _LOGGER.error('Missing required variable: "command"')
@@ -43,7 +41,7 @@ def setup_platform(hass, config, add_devices_callback, discovery_info=None):
 
 # pylint: disable=too-many-arguments
 class CommandSensor(Entity):
-    """ Represents a sensor that is returning a value of a shell commands. """
+    """Represents a sensor that is returning a value of a shell commands."""
     def __init__(self, hass, data, name, unit_of_measurement, value_template):
         self._hass = hass
         self.data = data
@@ -55,21 +53,21 @@ class CommandSensor(Entity):
 
     @property
     def name(self):
-        """ The name of the sensor. """
+        """The name of the sensor."""
         return self._name
 
     @property
     def unit_of_measurement(self):
-        """ Unit the value is expressed in. """
+        """Unit the value is expressed in."""
         return self._unit_of_measurement
 
     @property
     def state(self):
-        """ Returns the state of the device. """
+        """Returns the state of the device."""
         return self._state
 
     def update(self):
-        """ Gets the latest data and updates the state. """
+        """Gets the latest data and updates the state."""
         self.data.update()
         value = self.data.value
 
@@ -82,7 +80,7 @@ class CommandSensor(Entity):
 
 # pylint: disable=too-few-public-methods
 class CommandSensorData(object):
-    """ Class for handling the data retrieval. """
+    """Class for handling the data retrieval."""
 
     def __init__(self, command):
         self.command = command
@@ -90,7 +88,7 @@ class CommandSensorData(object):
 
     @Throttle(MIN_TIME_BETWEEN_UPDATES)
     def update(self):
-        """ Gets the latest data with a shell command. """
+        """Gets the latest data with a shell command."""
         _LOGGER.info('Running command: %s', self.command)
 
         try: