text: """
  homeassistant.components.switch.mystrom
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Support for myStrom switches.
  
  For more details about this component, please refer to the documentation at
  https://home-assistant.io/components/switch.mystrom/
  """
  import logging
  
  import requests
  
  from homeassistant.components.switch import SwitchDevice
  
  DEFAULT_NAME = 'myStrom Switch'
  
  _LOGGER = logging.getLogger(__name__)
  
  
  def setup_platform(hass, config, add_devices, discovery_info=None):
      """ Find and return myStrom switches. """
      host = config.get('host')
  
      if host is None:
          _LOGGER.error('Missing required variable: host')
          return False
  
      resource = 'http://{}'.format(host)
  
      try:
          requests.get(resource, timeout=10)
      except requests.exceptions.ConnectionError:
          _LOGGER.error("No route to device %s. "
                        "Please check the IP address in the configuration file",
                        host)
          return False
  
      add_devices([MyStromSwitch(
          config.get('name', DEFAULT_NAME),
          resource)])
  
  
  class MyStromSwitch(SwitchDevice):
      """ Represents a myStrom switch. """
      def __init__(self, name, resource):
          self._state = False
          self._name = name
          self._resource = resource
          self.consumption = 0
  
      @property
      def name(self):
          """ The name of the switch. """
          return self._name
  
      @property
      def is_on(self):
          """ True if switch is on. """
          return self._state
  
      @property
      def current_power_mwh(self):
          """ Current power consumption in mwh. """
          return self.consumption
  
      def turn_on(self, **kwargs):
          """ Turn the switch on. """
          try:
              request = requests.get('{}/relay'.format(self._resource),
                                     params={'state': '1'},
                                     timeout=10)
              if request.status_code == 200:
                  self._state = True
          except requests.exceptions.ConnectionError:
              _LOGGER.error("Can't turn on %s. Is device offline?",
                            self._resource)
  
      def turn_off(self, **kwargs):
          """ Turn the switch off. """
          try:
              request = requests.get('{}/relay'.format(self._resource),
                                     params={'state': '0'},
                                     timeout=10)
              if request.status_code == 200:
                  self._state = False
          except requests.exceptions.ConnectionError:
              _LOGGER.error("Can't turn on %s. Is device offline?",
                            self._resource)
  
      def update(self):
          """ Gets the latest data from REST API and updates the state. """
          try:
              request = requests.get('{}/report'.format(self._resource),
                                     timeout=10)
              data = request.json()
              self._state = bool(data['relay'])
              self.consumption = data['power']
          except requests.exceptions.ConnectionError:
              _LOGGER.error("No route to device '%s'. Is device offline?",
                            self._resource)
  