title: Using Google Calendar API with an API-key Python
body: <p>I am trying to integrate google calendar into my web app without using OAuth. Since all calendars that I am working with are public, I am trying to use an API-key instead, to avoid having my users redirected.</p>
  
  <p>I am currently playing around with the Calendar Event example and trying to get it to work with an API-key. Here is the code:</p>
  
  <pre><code>import httplib2
  import os
  
  from apiclient import discovery
  
  
  import datetime
  
  
  
  SCOPES = 'https://www.googleapis.com/auth/calendar'
  api_key = '************'
  APPLICATION_NAME = 'Google Calendar API Quickstart'
  
  
  def main():
  
      service = discovery.build('calendar', 'v3', developerKey=api_key)
  
      event = {
    'summary': 'Google I/O 2015',
    'location': '800 Howard St., San Francisco, CA 94103',
    'description': 'A chance to hear more about Google\'s developer products.',
    'start': {
      'dateTime': '2015-05-28T09:00:00-07:00',
      'timeZone': 'America/Los_Angeles',
    },
    'end': {
      'dateTime': '2015-05-28T17:00:00-07:00',
      'timeZone': 'America/Los_Angeles',
    },
    'recurrence': [
      'RRULE:FREQ=DAILY;COUNT=2'
    ],
    'attendees': [
      {'email': '******@*****.com'},
  
    ],
    'reminders': {
      'useDefault': False,
      'overrides': [
        {'method': 'email', 'minutes': 24 * 60},
        {'method': 'popup', 'minutes': 10},
      ],
    },
  }
  
      event = service.events().insert(calendarId='primary', body=event).execute()
  #print 'Event created: %s' % (event.get('htmlLink'))
  
  
  if __name__ == '__main__':
      main()
  </code></pre>
  
  <p>When this runs it gives me the following error: googleapiclient.errors.HttpError: https://www.googleapis.com/calendar/v3/calendars/primary/events?alt=json&amp;key=********* returned "Login Required"></p>
  
  <p>Any help would be much appreciated </p>