old_contents: """
  Support for displaying the current CPU speed.
  
  For more details about this platform, please refer to the documentation at
  https://home-assistant.io/components/sensor.cpuspeed/
  """
  import logging
  
  import voluptuous as vol
  
  import homeassistant.helpers.config_validation as cv
  from homeassistant.components.sensor import PLATFORM_SCHEMA
  from homeassistant.const import CONF_NAME
  from homeassistant.helpers.entity import Entity
  
  REQUIREMENTS = ['py-cpuinfo==4.0.0']
  
  _LOGGER = logging.getLogger(__name__)
  
  ATTR_BRAND = 'Brand'
  ATTR_HZ = 'GHz Advertised'
  ATTR_ARCH = 'arch'
  
  DEFAULT_NAME = 'CPU speed'
  
  ICON = 'mdi:pulse'
  
  PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
      vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
  })
  
  
  def setup_platform(hass, config, add_entities, discovery_info=None):
      """Set up the CPU speed sensor."""
      name = config.get(CONF_NAME)
  
      add_entities([CpuSpeedSensor(name)], True)
  
  
  class CpuSpeedSensor(Entity):
      """Representation of a CPU sensor."""
  
      def __init__(self, name):
          """Initialize the sensor."""
          self._name = name
          self._state = None
          self.info = None
          self._unit_of_measurement = 'GHz'
  
      @property
      def name(self):
          """Return the name of the sensor."""
          return self._name
  
      @property
      def state(self):
          """Return the state of the sensor."""
          return self._state
  
      @property
      def unit_of_measurement(self):
          """Return the unit the value is expressed in."""
          return self._unit_of_measurement
  
      @property
      def device_state_attributes(self):
          """Return the state attributes."""
          if self.info is not None:
              return {
                  ATTR_ARCH: self.info['arch'],
                  ATTR_BRAND: self.info['brand'],
                  ATTR_HZ: round(self.info['hz_advertised_raw'][0]/10**9, 2)
              }
  
      @property
      def icon(self):
          """Return the icon to use in the frontend, if any."""
          return ICON
  
      def update(self):
          """Get the latest data and updates the state."""
          from cpuinfo import cpuinfo
  
          self.info = cpuinfo.get_cpu_info()
          self._state = round(float(self.info['hz_actual_raw'][0])/10**9, 2)
  
new_contents: """
  Support for displaying the current CPU speed.
  
  For more details about this platform, please refer to the documentation at
  https://home-assistant.io/components/sensor.cpuspeed/
  """
  import logging
  
  import voluptuous as vol
  
  import homeassistant.helpers.config_validation as cv
  from homeassistant.components.sensor import PLATFORM_SCHEMA
  from homeassistant.const import CONF_NAME
  from homeassistant.helpers.entity import Entity
  
  REQUIREMENTS = ['py-cpuinfo==4.0.0']
  
  _LOGGER = logging.getLogger(__name__)
  
  ATTR_BRAND = 'Brand'
  ATTR_HZ = 'GHz Advertised'
  ATTR_ARCH = 'arch'
  
  HZ_ACTUAL_RAW = 'hz_actual_raw'
  HZ_ADVERTISED_RAW = 'hz_advertised_raw'
  
  DEFAULT_NAME = 'CPU speed'
  
  ICON = 'mdi:pulse'
  
  PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
      vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
  })
  
  
  def setup_platform(hass, config, add_entities, discovery_info=None):
      """Set up the CPU speed sensor."""
      name = config.get(CONF_NAME)
  
      add_entities([CpuSpeedSensor(name)], True)
  
  
  class CpuSpeedSensor(Entity):
      """Representation of a CPU sensor."""
  
      def __init__(self, name):
          """Initialize the sensor."""
          self._name = name
          self._state = None
          self.info = None
          self._unit_of_measurement = 'GHz'
  
      @property
      def name(self):
          """Return the name of the sensor."""
          return self._name
  
      @property
      def state(self):
          """Return the state of the sensor."""
          return self._state
  
      @property
      def unit_of_measurement(self):
          """Return the unit the value is expressed in."""
          return self._unit_of_measurement
  
      @property
      def device_state_attributes(self):
          """Return the state attributes."""
          if self.info is not None:
              attrs = {
                  ATTR_ARCH: self.info['arch'],
                  ATTR_BRAND: self.info['brand'],
              }
  
              if HZ_ADVERTISED_RAW in self.info:
                  attrs[ATTR_HZ] = round(
                      self.info[HZ_ADVERTISED_RAW][0] / 10 ** 9, 2
                  )
              return attrs
  
      @property
      def icon(self):
          """Return the icon to use in the frontend, if any."""
          return ICON
  
      def update(self):
          """Get the latest data and updates the state."""
          from cpuinfo import cpuinfo
  
          self.info = cpuinfo.get_cpu_info()
          if HZ_ACTUAL_RAW in self.info:
              self._state = round(
                  float(self.info[HZ_ACTUAL_RAW][0]) / 10 ** 9, 2
              )
          else:
              self._state = None
  
subject: Fix sensor.cpuspeed inside docker container (#20614) (#20656)