old_contents: from flask import current_app, request, session, get_flashed_messages
  from flask.ext.login import current_user
  from babel import Locale
  from apikit import cache_hash
  
  from spendb import __version__
  from spendb.core import babel
  from spendb.views.error import NotModified
  from spendb.views.home import blueprint as home
  
  
  def get_locale():
      if 'locale' in session:
          return Locale.parse(session.get('locale'))
      else:
          requested = request.accept_languages.values()
          requested = [l.replace('-', '_') for l in requested]
          available = map(unicode, babel.list_translations())
          return Locale.negotiate(available, requested)
  
  
  @home.before_app_request
  def before_request():
      current_app.cubes_workspace.flush_lookup_cache()
      request._http_etag = None
      request._http_private = False
  
  
  @home.after_app_request
  def after_request(resp):
      resp.headers['Server'] = 'SpenDB/%s' % __version__
  
      if resp.is_streamed and request.endpoint != 'static':
          # http://wiki.nginx.org/X-accel#X-Accel-Buffering
          resp.headers['X-Accel-Buffering'] = 'no'
  
      # skip cache under these conditions:
      if not current_app.config.get('CACHE') \
              or request.method not in ['GET', 'HEAD', 'OPTIONS'] \
              or resp.status_code > 399:
          resp.cache_control.no_cache = True
          return resp
  
      if request.endpoint == 'static':
          resp.cache_control.max_age = 3600 * 6
          resp.cache_control.public = True
  
      if request._http_etag:
          if not request._http_private:
              resp.cache_control.public = True
          else:
              resp.cache_control.private = True
          resp.cache_control.max_age = 3600 * 6
          resp.cache_control.must_revalidate = True
          resp.set_etag(request._http_etag)
  
      return resp
  
  
  def etag_cache_keygen(key_obj, private=False):
      request._http_private = private
  
      args = sorted(set(request.args.items()))
      # jquery where is your god now?!?
      args = filter(lambda (k, v): k != '_', args)
  
      request._http_etag = cache_hash(args, current_user,
                                      key_obj, get_locale())
      if request.if_none_match == request._http_etag:
          raise NotModified()
  
new_contents: from flask import current_app, request, session
  from flask.ext.login import current_user
  from babel import Locale
  from apikit import cache_hash
  
  from spendb import __version__
  from spendb.core import babel
  from spendb.views.error import NotModified
  from spendb.views.home import blueprint as home
  
  
  def get_locale():
      if 'locale' in session:
          return Locale.parse(session.get('locale'))
      else:
          requested = request.accept_languages.values()
          requested = [l.replace('-', '_') for l in requested]
          available = map(unicode, babel.list_translations())
          return Locale.negotiate(available, requested)
  
  
  @home.before_app_request
  def before_request():
      current_app.cubes_workspace.flush_lookup_cache()
      request._http_etag = None
      request._http_private = False
  
  
  @home.after_app_request
  def after_request(resp):
      resp.headers['Server'] = 'SpenDB/%s' % __version__
  
      if resp.is_streamed and request.endpoint != 'static':
          # http://wiki.nginx.org/X-accel#X-Accel-Buffering
          resp.headers['X-Accel-Buffering'] = 'no'
  
      # skip cache under these conditions:
      if not current_app.config.get('CACHE') \
              or request.method not in ['GET', 'HEAD', 'OPTIONS'] \
              or resp.status_code > 399:
          resp.cache_control.no_cache = True
          return resp
  
      if request.endpoint == 'static':
          resp.cache_control.max_age = 3600 * 6
          resp.cache_control.public = True
  
      if request._http_etag:
          if not request._http_private:
              resp.cache_control.public = True
          else:
              resp.cache_control.private = True
          resp.cache_control.max_age = 3600 * 6
          resp.cache_control.must_revalidate = True
          resp.set_etag(request._http_etag)
  
      return resp
  
  
  def etag_cache_keygen(key_obj, private=False):
      request._http_private = private
  
      args = sorted(set(request.args.items()))
      # jquery where is your god now?!?
      args = filter(lambda (k, v): k != '_', args)
  
      request._http_etag = cache_hash(args, current_user,
                                      key_obj, get_locale())
      if request.if_none_match == request._http_etag:
          raise NotModified()
  
subject: Remove unused import.