old_contents: 
  
  def has_member(mylist, member=None):
      return [item for item in mylist if member in mylist]
  
  class FilterModule(object):
  
      def filters(self):
          return {"has_member": has_member,
                  }
  
new_contents: 
  
  def has_member(mylist, member=None):
      return [item for item in mylist if member in item]
  
  class FilterModule(object):
  
      def filters(self):
          return {"has_member": has_member,
                  }
  
subject: Fix filter