how to get email address along with credential for calendar after user allow permission

Question

how to get owner email address after user allow permission

  SCOPES = ['https://www.googleapis.com/auth/calendar']  
  flow = InstalledAppFlow.from_client_secrets_file(credentials.json, SCOPES)
  creds = flow.run_local_server(port=0)
  service = build('calendar', 'v3', credentials=creds)

  event_body = {
     'summary': 'Test calendar',
    'location': 'Gurgaon, Haryana',
    'description': 'A chance to hear more about Google\'s developer 
      products.',
  'start': {
    'dateTime': '2020-03-28T09:00:00-07:00',
    'timeZone': 'Asia/Kolkata',
    },
'end': {
    'dateTime': '2020-03-28T17:00:00-07:00',
    'timeZone': 'America/Los_Angeles',
   },

'attendees': [
    {'email': 'user@gmail.com'},
   ],
'reminders': {
    'useDefault': False,
  },
"visibility": "public",
   }

 event = service.events().insert(calendarId='primary',body=evnt_body)  

Also tried to add 'https://www.googleapis.com/auth/userinfo.email' this scope but it returns None in credential. My need to add owner user's email address in attendances list

Answer 1

You can make a call to Users.getProfile, and provide the special value me to userId to indicate the authenticated user:

gmail_service = build('gmail', 'v1', credentials=creds)
email_address = gmail_service.users().getProfile(userId='me').execute()["emailAddress"]

Note:

• One of these scopes has to be provided.
• Please notice that the user who creates the event is by default added as an attendee. You might not need to specify this user when creating the event.

Reference:

• Gmail API: Users.getProfile