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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def GetFeeds(client):
 """Returns a list of all enabled Feeds. Args: client: an AdWordsClient instance. Returns: A list containing all enabled Feeds. """

  feed_service = client.GetService('FeedService', 'v201809')

  feeds = []
  more_pages = True

  selector = {
      'fields': ['Id', 'Name', 'Attributes'],
      'predicates': [
          {
              'field': 'Origin',
              'operator': 'EQUALS',
              'values': ['USER']
          },
          {
              'field': 'FeedStatus',
              'operator': 'EQUALS',
              'values': ['ENABLED']
          }
      ],
      'paging': {
          'startIndex': 0,
          'numberResults': PAGE_SIZE
      }
  }

  while more_pages:
    page = feed_service.get(selector)

    if 'entries' in page:
      feeds.extend(page['entries'])

    selector['paging']['startIndex'] += PAGE_SIZE
    more_pages = selector['paging']['startIndex'] < int(page['totalNumEntries'])

  return feeds