code: def print_filters():
      
      for filter_name in VALID_FILTERS:
          filter_func = getattr(filters, 'filter_{0}'.format(filter_name))
          description = filter_func.__doc__
          if description:
              description = re.sub(r'\n\s+', ' ', description)
              description.strip()
  
          print('{0}: {1}\n'.format(filter_name, description))
docs: Prints all filters available with their description.