Calendar.py

import httplib2
import os

from apiclient import discovery
import oauth2client
from oauth2client import client
from oauth2client import tools

import datetime
from Fetch import fetch

SCOPES = 'https://www.googleapis.com/auth/calendar'
CLIENT_SECRET_FILE = 'client_secret.json'
APPLICATION_NAME = 'CTFcalendar'

def get_credentials():
    home_dir = os.path.expanduser('~')
    credential_dir = os.path.join(home_dir, '.credentials')
    if not os.path.exists(credential_dir):
        os.makedirs(credential_dir)
    credential_path = os.path.join(credential_dir,
                                   'CTFcalendar.json')
    store = oauth2client.file.Storage(credential_path)
    credentials = store.get()
    if not credentials or credentials.invalid:
        flow = client.flow_from_clientsecrets(CLIENT_SECRET_FILE, SCOPES)
        flow.user_agent = APPLICATION_NAME
        credentials = tools.run_flow(flow, store)
        print('Storing credentials to ' + credential_path)
    return credentials

def main():
    credentials = get_credentials()
    http = credentials.authorize(httplib2.Http())
    service = discovery.build('calendar', 'v3', http=http)
    now = datetime.datetime.utcnow().isoformat() + 'Z' # 'Z' indicates UTC time
    eventsResult = service.events().list(
        calendarId='primary', timeMin=now, singleEvents=True,
        orderBy='startTime').execute()
    CurrEvents = eventsResult.get('items',[])
    summaries=[]
    for e in CurrEvents:
        summaries.append(e['summary'])
    events=fetch()
    for event in events:
        if (event['summary'] not in summaries ):
            event = service.events().insert(calendarId='primary', body=event).execute()
    print('Events Added')
if __name__ == '__main__':
    main()