API freezing?

Hi,
I am calling the Python-API nearly every 5 seconds in a while loop. Sometimes it seems to be frozen. My script stopped data acquisition this morning and was terminated in the evening by pressing CTRL+C. I would prefer if the API throws an exception after a timeout instead of hanging infinitely.
This is the errorlog:
File "json-conversion.py", line 91, in <module>
states = api.get_states()
File "build/bdist.linux-armv7l/egg/opensky_api.py", line 138, in
get_states
File "build/bdist.linux-armv7l/egg/opensky_api.py", line 102, in _get_json
File "/usr/lib/python2.7/dist-packages/requests/api.py", line 60, in get
return request('get', url, **kwargs)
File "/usr/lib/python2.7/dist-packages/requests/api.py", line 49, in
request
return session.request(method=method, url=url, **kwargs)
File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 457, in
request
resp = self.send(prep, **send_kwargs)
File "/usr/lib/python2.7/dist-packages/requests/sessions.py", line 569, in
send
r = adapter.send(request, **kwargs)
File "/usr/lib/python2.7/dist-packages/requests/adapters.py", line 362, in
send
timeout=timeout
File "/usr/lib/python2.7/dist-packages/urllib3/connectionpool.py", line
516, in urlopen
body=body, headers=headers)
File "/usr/lib/python2.7/dist-packages/urllib3/connectionpool.py", line
331, in _make_request
httplib_response = conn.getresponse(buffering=True)
File "/usr/lib/python2.7/httplib.py", line 1111, in getresponse
response.begin()
File "/usr/lib/python2.7/httplib.py", line 444, in begin
version, status, reason = self._read_status()
File "/usr/lib/python2.7/httplib.py", line 400, in _read_status
line = self.fp.readline(_MAXLINE + 1)
File "/usr/lib/python2.7/socket.py", line 476, in readline
data = self._sock.recv(self._rbufsize)
File "/usr/lib/python2.7/dist-packages/urllib3/contrib/pyopenssl.py", line
188, in recv
data = self.connection.recv(*args, **kwargs)
KeyboardInterrupt