old_contents: from pyramid.threadlocal import get_current_request
  
  class Flash(object):
      """ There are 4 default queues, warning, notice, error and success
      """
  
      queues = ['warning', ''error', 'success', 'notice']
      default_queue = 'notice'
          
      def __init__(self, queues=None, default_queue=None, allow_duplicate=True):
          self.allow_duplicate = allow_duplicate
  
          if queues is not None:
              self.queues = queues
          if default_queue is not None:
              self.default_queue = default_queue
  
      def __call__(self, msg, queue=default_queue):
          request = get_current_request()
          request.session.flash(msg, queue, self.allow_duplicate)
  
      def get_all(self):
          """ Returns all queued Flash Messages
          """
          request = get_current_request()
          messages = []
          for queue in self.queues:
              for peeked in request.session.peek_flash(queue):
                  messages.append({'message': peeked, 'queue': queue,})
              request.session.pop_flash(queue)
          return messages
  
  flash = Flash(allow_duplicate=False)
  
new_contents: from pyramid.threadlocal import get_current_request
  
  class Flash(object):
      """ There are 4 default queues, warning, notice, error and success
      """
  
      queues = ['warning', 'error', 'success', 'notice']
      default_queue = 'notice'
          
      def __init__(self, queues=None, default_queue=None, allow_duplicate=True):
          self.allow_duplicate = allow_duplicate
  
          if queues is not None:
              self.queues = queues
          if default_queue is not None:
              self.default_queue = default_queue
  
      def __call__(self, msg, queue=default_queue):
          request = get_current_request()
          request.session.flash(msg, queue, self.allow_duplicate)
  
      def get_all(self):
          """ Returns all queued Flash Messages
          """
          request = get_current_request()
          messages = []
          for queue in self.queues:
              for peeked in request.session.peek_flash(queue):
                  messages.append({'message': peeked, 'queue': queue,})
              request.session.pop_flash(queue)
          return messages
  
  flash = Flash(allow_duplicate=False)
  
subject: remove '' and replace with '