Handle feed with one entry

rp3tya commented 4 years ago

meteoalarm: Error on device update!
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 292, in _async_add_entity
    await entity.async_device_update(warning=False)
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 450, in async_device_update
    await self.hass.async_add_executor_job(self.update)
  File "/usr/local/lib/python3.7/concurrent/futures/thread.py", line 57, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/src/homeassistant/homeassistant/components/meteoalarm/binary_sensor.py", line 85, in update
    alert = self._api.get_alert()
  File "/usr/local/lib/python3.7/site-packages/meteoalertapi/meteoalertapi.py", line 37, in get_alert
    if entry.get('cap:areaDesc') != self.province:
AttributeError: 'str' object has no attribute 'get'

This error came up every time when the ATOM feed contained only one entry. In this case the for loop iterated through that single entry's keys instead of a one-element list. The only change I made is to put the entry in a list if the feed does not return one.