text: """Definition of Picnic sensors."""
  from __future__ import annotations
  
  from typing import Any
  
  from homeassistant.components.sensor import SensorEntity
  from homeassistant.config_entries import ConfigEntry
  from homeassistant.const import ATTR_ATTRIBUTION
  from homeassistant.core import HomeAssistant
  from homeassistant.helpers.typing import StateType
  from homeassistant.helpers.update_coordinator import (
      CoordinatorEntity,
      DataUpdateCoordinator,
  )
  
  from .const import ADDRESS, ATTRIBUTION, CONF_COORDINATOR, DOMAIN, SENSOR_TYPES
  
  
  async def async_setup_entry(
      hass: HomeAssistant, config_entry: ConfigEntry, async_add_entities
  ):
      """Set up Picnic sensor entries."""
      picnic_coordinator = hass.data[DOMAIN][config_entry.entry_id][CONF_COORDINATOR]
  
      # Add an entity for each sensor type
      async_add_entities(
          PicnicSensor(picnic_coordinator, config_entry, sensor_type, props)
          for sensor_type, props in SENSOR_TYPES.items()
      )
  
      return True
  
  
  class PicnicSensor(SensorEntity, CoordinatorEntity):
      """The CoordinatorEntity subclass representing Picnic sensors."""
  
      def __init__(
          self,
          coordinator: DataUpdateCoordinator[Any],
          config_entry: ConfigEntry,
          sensor_type,
          properties,
      ):
          """Init a Picnic sensor."""
          super().__init__(coordinator)
  
          self.sensor_type = sensor_type
          self.properties = properties
          self.entity_id = f"sensor.picnic_{sensor_type}"
          self._service_unique_id = config_entry.unique_id
  
      @property
      def native_unit_of_measurement(self) -> str | None:
          """Return the unit this state is expressed in."""
          return self.properties.get("unit")
  
      @property
      def unique_id(self) -> str | None:
          """Return a unique ID."""
          return f"{self._service_unique_id}.{self.sensor_type}"
  
      @property
      def name(self) -> str | None:
          """Return the name of the entity."""
          return self._to_capitalized_name(self.sensor_type)
  
      @property
      def native_value(self) -> StateType:
          """Return the state of the entity."""
          data_set = (
              self.coordinator.data.get(self.properties["data_type"], {})
              if self.coordinator.data is not None
              else {}
          )
          return self.properties["state"](data_set)
  
      @property
      def device_class(self) -> str | None:
          """Return the class of this device, from component DEVICE_CLASSES."""
          return self.properties.get("class")
  
      @property
      def icon(self) -> str | None:
          """Return the icon to use in the frontend, if any."""
          return self.properties["icon"]
  
      @property
      def available(self) -> bool:
          """Return True if entity is available."""
          return self.coordinator.last_update_success and self.state is not None
  
      @property
      def entity_registry_enabled_default(self) -> bool:
          """Return if the entity should be enabled when first added to the entity registry."""
          return self.properties.get("default_enabled", False)
  
      @property
      def extra_state_attributes(self):
          """Return the sensor specific state attributes."""
          return {ATTR_ATTRIBUTION: ATTRIBUTION}
  
      @property
      def device_info(self):
          """Return device info."""
          return {
              "identifiers": {(DOMAIN, self._service_unique_id)},
              "manufacturer": "Picnic",
              "model": self._service_unique_id,
              "name": f"Picnic: {self.coordinator.data[ADDRESS]}",
              "entry_type": "service",
          }
  
      @staticmethod
      def _to_capitalized_name(name: str) -> str:
          return name.replace("_", " ").capitalize()
  