old_contents: """ Contains code for searching podcasts
  
  Uses django.contrib.postgres.search for searching. See docs at
  https://docs.djangoproject.com/en/1.11/ref/contrib/postgres/search/
  
  """
  
  from django.conf import settings
  
  from mygpo.podcasts.models import Podcast
  
  from django.db.models import F, FloatField, ExpressionWrapper
  from django.contrib.postgres.search import SearchQuery, SearchRank
  from django.conf import settings
  
  import logging
  
  logger = logging.getLogger(__name__)
  
  
  SEARCH_CUTOFF = settings.SEARCH_CUTOFF
  
  QUERY_LENGTH_CUTOFF = settings.QUERY_LENGTH_CUTOFF
  
  
  def search_podcasts(query):
      """ Search for podcasts according to 'query' """
      if is_query_too_short(query):
          logger.debug('Found no podcasts for "{query}". Query is too short', query=query)
          results = ()
          return results
  
      logger.debug('Searching for "{query}" podcasts"', query=query)
  
      query = SearchQuery(query)
  
      results = (
          Podcast.objects.annotate(rank=SearchRank(F('search_vector'), query))
          .annotate(
              order=ExpressionWrapper(
                  F('rank') * F('subscribers'), output_field=FloatField()
              )
          )
          .filter(rank__gte=SEARCH_CUTOFF)
          .order_by('-order')
      )
  
      logger.debug(
          'Found {count} podcasts for "{query}"', count=len(results), query=query
      )
  
      return results
  
  
  def is_query_too_short(query):
      return len(query.replace(" ", "")) <= QUERY_LENGTH_CUTOFF
  
new_contents: """ Contains code for searching podcasts
  
  Uses django.contrib.postgres.search for searching. See docs at
  https://docs.djangoproject.com/en/1.11/ref/contrib/postgres/search/
  
  """
  
  from django.conf import settings
  
  from mygpo.podcasts.models import Podcast
  
  from django.db.models import F, FloatField, ExpressionWrapper
  from django.contrib.postgres.search import SearchQuery, SearchRank
  from django.conf import settings
  
  import logging
  
  logger = logging.getLogger(__name__)
  
  
  SEARCH_CUTOFF = settings.SEARCH_CUTOFF
  
  QUERY_LENGTH_CUTOFF = settings.QUERY_LENGTH_CUTOFF
  
  
  def search_podcasts(query):
      """ Search for podcasts according to 'query' """
      if is_query_too_short(query):
          logger.debug('Found no podcasts for "{query}". Query is too short', query=query)
          results = ()
          return results
  
      logger.debug('Searching for "{query}" podcasts"', query=query)
  
      query = SearchQuery(query)
  
      results = (
          Podcast.objects.annotate(rank=SearchRank(F('search_vector'), query))
          .annotate(
              order=ExpressionWrapper(
                  F('rank') * F('subscribers'), output_field=FloatField()
              )
          )
          .filter(rank__gte=SEARCH_CUTOFF)
          .order_by('-order')
      )
  
      logger.debug(
          'Found {count} podcasts for "{query}"', count=len(results), query=query
      )
  
      return results
  
  
  def is_query_too_short(query):
      return len(query.replace(" ", "")) <= QUERY_LENGTH_CUTOFF
subject: Fix pep8