new.py

def getEvents(page):
    pattern = "%Y-%m-%dT%H:%M:%S%z"
    start_time = datetime.datetime.utcfromtimestamp(datetime.datetime.strptime(event['start_time'], pattern).timestamp()).replace(tzinfo=pytz.utc)
    now = datetime.datetime.utcnow().replace(tzinfo=pytz.utc)

    events = (x for x in userGraph.get(path='{}/events'.format(page['id'], type='page')['data']) 
              if now < start_time
              and x['id'] not in sent)

    return [Event(name=event['name'], id=event['id'], start_time=event['start_time'])
            for event in events]


userPages = [Page(name=x['name'], id=x['id'], access_token=x['access_token'],
                  perms=x['perms'], events=getEvents(x))
             for x in userGraph.get(path='me/accounts', type='page')['data']
             if x['name'] in settings['facebookPages']]

old.py

def getEvents():
userPages = []
for i in pages:
    for page in settings['pages']:
        if page == i['name']:
            #Getting page's events
            eventsResponse = userGraph.get(path='{}/events'.format(i['id']))['data']
            j = 0
            events = []

            for event in eventsResponse:
                pattern = "%Y-%m-%dT%H:%M:%S%z"
                start_time = datetime.datetime.utcfromtimestamp(datetime.datetime.strptime(event['start_time'], pattern).timestamp()).replace(tzinfo=pytz.utc)
                end_time = datetime.datetime.utcfromtimestamp(datetime.datetime.strptime(event['end_time'], pattern).timestamp()).replace(tzinfo=pytz.utc)
                now = datetime.datetime.utcnow().replace(tzinfo=pytz.utc)

                if now < start_time:
                    events.append(Event(name=event['name'], id=event['id'], start_time=start_time, end_time=end_time, location=event['location']))

            #Instanciating Page class
            userPages.append(Page(i['name'], i['access_token'], i['id'], i['perms'], events))

return userPages