old_contents: """
  Support for monitoring a Sense energy sensor.
  
  For more details about this platform, please refer to the documentation at
  https://home-assistant.io/components/sense/
  """
  import logging
  
  import voluptuous as vol
  
  from homeassistant.helpers.discovery import load_platform
  from homeassistant.const import (CONF_EMAIL, CONF_PASSWORD, CONF_TIMEOUT)
  import homeassistant.helpers.config_validation as cv
  
  REQUIREMENTS = ['sense_energy==0.5.1']
  
  _LOGGER = logging.getLogger(__name__)
  
  SENSE_DATA = 'sense_data'
  
  DOMAIN = 'sense'
  
  ACTIVE_UPDATE_RATE = 60
  DEFAULT_TIMEOUT = 5
  
  CONFIG_SCHEMA = vol.Schema({
      DOMAIN: vol.Schema({
          vol.Required(CONF_EMAIL): cv.string,
          vol.Required(CONF_PASSWORD): cv.string,
          vol.Optional(CONF_TIMEOUT, DEFAULT_TIMEOUT): cv.positive_int,
      })
  }, extra=vol.ALLOW_EXTRA)
  
  
  def setup(hass, config):
      """Set up the Sense sensor."""
      from sense_energy import Senseable, SenseAuthenticationException
  
      username = config[DOMAIN][CONF_EMAIL]
      password = config[DOMAIN][CONF_PASSWORD]
  
      timeout = config[DOMAIN][CONF_TIMEOUT]
      try:
          hass.data[SENSE_DATA] = Senseable(api_timeout=timeout,
                                            wss_timeout=timeout)
          hass.data[SENSE_DATA].authenticate(username, password)
          hass.data[SENSE_DATA].rate_limit = ACTIVE_UPDATE_RATE
      except SenseAuthenticationException:
          _LOGGER.error("Could not authenticate with sense server")
          return False
      load_platform(hass, 'sensor', DOMAIN, {}, config)
      load_platform(hass, 'binary_sensor', DOMAIN, {}, config)
      return True
  
new_contents: """
  Support for monitoring a Sense energy sensor.
  
  For more details about this platform, please refer to the documentation at
  https://home-assistant.io/components/sense/
  """
  import logging
  
  import voluptuous as vol
  
  from homeassistant.helpers.discovery import load_platform
  from homeassistant.const import (CONF_EMAIL, CONF_PASSWORD, CONF_TIMEOUT)
  import homeassistant.helpers.config_validation as cv
  
  REQUIREMENTS = ['sense_energy==0.5.1']
  
  _LOGGER = logging.getLogger(__name__)
  
  SENSE_DATA = 'sense_data'
  
  DOMAIN = 'sense'
  
  ACTIVE_UPDATE_RATE = 60
  DEFAULT_TIMEOUT = 5
  
  CONFIG_SCHEMA = vol.Schema({
      DOMAIN: vol.Schema({
          vol.Required(CONF_EMAIL): cv.string,
          vol.Required(CONF_PASSWORD): cv.string,
          vol.Optional(CONF_TIMEOUT, default=DEFAULT_TIMEOUT): cv.positive_int,
      })
  }, extra=vol.ALLOW_EXTRA)
  
  
  def setup(hass, config):
      """Set up the Sense sensor."""
      from sense_energy import Senseable, SenseAuthenticationException
  
      username = config[DOMAIN][CONF_EMAIL]
      password = config[DOMAIN][CONF_PASSWORD]
  
      timeout = config[DOMAIN][CONF_TIMEOUT]
      try:
          hass.data[SENSE_DATA] = Senseable(api_timeout=timeout,
                                            wss_timeout=timeout)
          hass.data[SENSE_DATA].authenticate(username, password)
          hass.data[SENSE_DATA].rate_limit = ACTIVE_UPDATE_RATE
      except SenseAuthenticationException:
          _LOGGER.error("Could not authenticate with sense server")
          return False
      load_platform(hass, 'sensor', DOMAIN, {}, config)
      load_platform(hass, 'binary_sensor', DOMAIN, {}, config)
      return True
  
subject: Fix default value for optional Sense configuration parameter (#18379)