Real time data streaming - Error with Python Command

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hey,

i'm following the github repository for RTDS via the following link:

https://github.com/urbanairship/connect-python-library

when i'm running the Python script and changing the following parameters: 

Url (for EU), app key, access token. 

>>> import uaconnect
>>> consumer = uaconnect.Consumer(
...     'application_key', 'access_token',
...     uaconnect.FileRecorder('.offset'))
>>> consumer.connect()
>>> for event in consumer.read():
...     if event is None:
...        continue
>>>     print("Got event: {}".format(event))
>>>     consumer.ack(event)

i'm receiving the following error: 

Traceback (most recent call last):
  File "C:\Users\asafha\PycharmProjects\Learning_Project\venv\Airship int live streaming.py", line 5, in <module>
    consumer.connect()
  File "C:\Users\asafha\PycharmProjects\Learning_Project\venv\lib\site-packages\uaconnect\consumer.py", line 241, in connect
    elif self.start:
AttributeError: 'Consumer' object has no attribute 'start'

please note, that with Curl Command i'm receiving the events.

questions: 

1. should i add Bearer string before the access_token such as in Curl command? 

2. how can i solve this error and get the streaming events? 

Assaf