Calling example returns None

[notvillers]

Hi,
I am trying to integrate OpenSky but if i try to demo with the example file or with any other configuration, i just get None as result.

$> cat pytest.py

from opensky_api import OpenSkyApi

api = OpenSkyApi()

s = api.get_states()

print(s)

$> python pytest.py

None

$>

I used REST API, and maybe I got the unauthenticated user limits, but even even if i pass my username and password and fucks around the lib by getting the raw json I still get 'Unauthorised' as response...

[mdavis-xyz]

I suspect this is due to the bug in the code here. Any HTTP status which is not 200 results in the error being ignored and None silently returned.

[jaluebbe]

I created an example.py to demonstrate the functionality. It should work even without a credentials.json in your folder. The installation instruction were updated as well.