Home assistant DST binary sensor

dst.py

import time

from homeassistant.components.binary_sensor import BinarySensorDevice


def setup_platform(hass, config, add_devices, discovery_info=None):
    add_devices([DSTBinarySensor()])


class DSTBinarySensor(BinarySensorDevice):
    """representation of a DST binary sensor."""

    def __init__(self):
        self._name = 'DST Binary Sensor'
        self._state = None
        self._sensor_type = 'dst'

    @property
    def device_class(self):
        """Return the class of this sensor."""
        return self._sensor_type

    @property
    def should_poll(self):
        """No polling needed for a demo binary sensor."""
        return False

    @property
    def name(self):
        """Return the name of the binary sensor."""
        return self._name

    @property
    def is_on(self):
        """Return true if the binary sensor is on."""
        return bool(time.localtime().tm_isdst)