text: """Adds config flow for AccuWeather."""
  import asyncio
  
  from accuweather import AccuWeather, ApiError, InvalidApiKeyError, RequestsExceededError
  from aiohttp import ClientError
  from aiohttp.client_exceptions import ClientConnectorError
  from async_timeout import timeout
  import voluptuous as vol
  
  from homeassistant import config_entries
  from homeassistant.const import CONF_API_KEY, CONF_LATITUDE, CONF_LONGITUDE, CONF_NAME
  from homeassistant.core import callback
  from homeassistant.helpers.aiohttp_client import async_get_clientsession
  import homeassistant.helpers.config_validation as cv
  
  from .const import CONF_FORECAST, DOMAIN
  
  
  class AccuWeatherFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
      """Config flow for AccuWeather."""
  
      VERSION = 1
  
      async def async_step_user(self, user_input=None):
          """Handle a flow initialized by the user."""
          # Under the terms of use of the API, one user can use one free API key. Due to
          # the small number of requests allowed, we only allow one integration instance.
          if self._async_current_entries():
              return self.async_abort(reason="single_instance_allowed")
  
          errors = {}
  
          if user_input is not None:
              websession = async_get_clientsession(self.hass)
              try:
                  async with timeout(10):
                      accuweather = AccuWeather(
                          user_input[CONF_API_KEY],
                          websession,
                          latitude=user_input[CONF_LATITUDE],
                          longitude=user_input[CONF_LONGITUDE],
                      )
                      await accuweather.async_get_location()
              except (ApiError, ClientConnectorError, asyncio.TimeoutError, ClientError):
                  errors["base"] = "cannot_connect"
              except InvalidApiKeyError:
                  errors[CONF_API_KEY] = "invalid_api_key"
              except RequestsExceededError:
                  errors[CONF_API_KEY] = "requests_exceeded"
              else:
                  await self.async_set_unique_id(
                      accuweather.location_key, raise_on_progress=False
                  )
  
                  return self.async_create_entry(
                      title=user_input[CONF_NAME], data=user_input
                  )
  
          return self.async_show_form(
              step_id="user",
              data_schema=vol.Schema(
                  {
                      vol.Required(CONF_API_KEY): str,
                      vol.Optional(
                          CONF_LATITUDE, default=self.hass.config.latitude
                      ): cv.latitude,
                      vol.Optional(
                          CONF_LONGITUDE, default=self.hass.config.longitude
                      ): cv.longitude,
                      vol.Optional(
                          CONF_NAME, default=self.hass.config.location_name
                      ): str,
                  }
              ),
              errors=errors,
          )
  
      @staticmethod
      @callback
      def async_get_options_flow(config_entry):
          """Options callback for AccuWeather."""
          return AccuWeatherOptionsFlowHandler(config_entry)
  
  
  class AccuWeatherOptionsFlowHandler(config_entries.OptionsFlow):
      """Config flow options for AccuWeather."""
  
      def __init__(self, config_entry):
          """Initialize AccuWeather options flow."""
          self.config_entry = config_entry
  
      async def async_step_init(self, user_input=None):
          """Manage the options."""
          return await self.async_step_user()
  
      async def async_step_user(self, user_input=None):
          """Handle a flow initialized by the user."""
          if user_input is not None:
              return self.async_create_entry(title="", data=user_input)
  
          return self.async_show_form(
              step_id="user",
              data_schema=vol.Schema(
                  {
                      vol.Optional(
                          CONF_FORECAST,
                          default=self.config_entry.options.get(CONF_FORECAST, False),
                      ): bool
                  }
              ),
          )
  