Core: DHT22 errors after 0.51

[GMFalka]

Make sure you are running the latest version of Home Assistant before reporting an issue.

You should only file an issue if you found a bug. Feature and enhancement requests should go in the Feature Requests section of our community forum:

Home Assistant release (hass --version):
0.51

Python release (python3 --version):
Python 3.4.2

Component/platform:
DHT22

Description of problem:

DHT22 Humidity and Temp sensor only shows either Hum or Temp. Error log below.
Expected:

Problem-relevant configuration.yaml entries and steps to reproduce:

sensor:
  - platform: dht
    sensor: DHT22
    pin: 24
    name: 'Hallway'
    monitored_conditions:
      - temperature
      - humidity

1. 
   
   
   2.
   
3.

Traceback (if applicable):

2017-08-13 21:53:52 ERROR (MainThread) [homeassistant.core] Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/usr/lib/python3.4/asyncio/tasks.py", line 233, in _step
    result = coro.throw(exc)
  File "/usr/local/lib/python3.4/dist-packages/homeassistant/helpers/entity_component.py", line 381, in async_process_entity
    new_entity, self, update_before_add=update_before_add
  File "/usr/local/lib/python3.4/dist-packages/homeassistant/helpers/entity_component.py", line 212, in async_add_entity
    yield from self.hass.async_add_job(entity.update)
  File "/usr/lib/python3.4/asyncio/futures.py", line 388, in __iter__
    yield self  # This tells Task to wait for completion.
  File "/usr/lib/python3.4/asyncio/tasks.py", line 286, in _wakeup
    value = future.result()
  File "/usr/lib/python3.4/asyncio/futures.py", line 277, in result
    raise self._exception
  File "/usr/lib/python3.4/concurrent/futures/thread.py", line 54, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.4/dist-packages/homeassistant/components/sensor/dht.py", line 139, in update
    humidity = data[SENSOR_HUMIDITY]
KeyError: 'humidity'

Additional info:

[kukachik]

Same for me, but for temperature. Humidity works fine.

[KillingJacky]

temperature error +1
[UPDATE] after upgraded to 0.51.2, I got humidity keyerror too.

[ghost]

Same for me.

[davegreengo]

Also temperature error here, humidity works fine.

[omarinho1955]

After upgrade to 0.51.2 , I got all this errors too. After that, I proceed a completely uninstall and did a new instalation, all errors still there.

[KillingJacky]

I worked out with a quick fix:

homeassistant $ vi /srv/homeassistant/homeassistant_venv/lib/python3.4/site-packages/homeassistant/components/sensor/dht.py

# line 131, mod to
temperature = data.get(SENSOR_TEMPERATURE, 0)
#line 139, mod to
humidity = data.get(SENSOR_HUMIDITY, 0)

This is really a quickfix, it's not fixing the issue to the ground, still waiting the official fix.

[mypal]

+1

[migromao]

KillingJacky workarround works like a charm ! thank you

[GMFalka]

Im not using the Python Virtual Env, so i dont have .../homeassistant/components/sensor/ folder.. :/
I might reinstall my pies with HASS.io at this point.

[Landrash]

@GMFalka The equivalent folder is availble on any HA installation even if you not using a VEnv.

[omarinho1955]

KillingJacky, with your quick fix, it's working fine now! thank you

[cptquad]

The fix works. Thanks!

[GMFalka]

@Landrash
This is how it looks at my two pies and xubuntu too (i have 3 HA instance in the house)

[Landrash]

@GMFalka The file in question is not located where your looking but where HA is installed. Most likely where your installation stores it's python libraries.

[migromao]

check the path on the error message.
it even says the line

[GMFalka]

@migromao
Thanks! I'm a goofus!

[KavajNaruj]

Thank you KillingJacky! Now it's working fine again.

[hellad]

Thanks to KillingJacky that sensor alive again!

[namadori]

@KillingJacky Thanks for the tip. Did you already made the PR? I can't find it.

[encor50]

How can i use this quickfix on hassio these folders doesnot exist

[hellad]

How can i use this quickfix on hassio these folders doesnot exist

Why don't you try to search that file?
sudo find / -name dht.py -print

[encor50]

Why don't you try to search that file?
sudo find / -name dht.py -print

core-ssh:~# find / -name *.py -print
/config/deps/lib/python3.6/site-packages/Adafruit_DHT/Test.py
/config/deps/lib/python3.6/site-packages/Adafruit_DHT/Raspberry_Pi_2.py
/config/deps/lib/python3.6/site-packages/Adafruit_DHT/common.py
/config/deps/lib/python3.6/site-packages/Adafruit_DHT/__init__.py
/config/deps/lib/python3.6/site-packages/Adafruit_DHT/platform_detect.py
/config/deps/lib/python3.6/site-packages/Adafruit_DHT/Beaglebone_Black.py
/config/deps/lib/python3.6/site-packages/Adafruit_DHT/Raspberry_Pi.py
/usr/share/vim/vim80/tools/demoserver.py

now what ?

[KillingJacky]

@namadori Not yet, as I think it's not the best way to solve this issue, it will produce at least one useless 0 reading for either temperature or humidity.

[maweki]

My PR that should hopefully fix the issue has been merged.