Q:

Get google calendarID from Google calendar name using API in python

How can I retrieve the calendar ID of various calendars on my google calendar by using the API, I am aware that using the 
page_token = None
while True:
  calendar_list = service.calendarList().list(pageToken=page_token).execute()
  for calendar_list_entry in calendar_list['items']:
    print calendar_list_entry['summary']
  page_token = calendar_list.get('nextPageToken')
  if not page_token:
    break

It will  return the name but I would like to get it to return the CalendarId

A:

google API calendarList resource representation
You could just print out the entry itself, instead of a single key.
page_token = None
while True:
  calendar_list = service.calendarList().list(pageToken=page_token).execute()
  for calendar_list_entry in calendar_list['items']:
    print calendar_list_entry
  page_token = calendar_list.get('nextPageToken')
  if not page_token:
    break

Or directly get the id:
print calendar_list_entry["id"]

