code: def check_dynamic_route_exists(pattern, routes_to_check, parameters):
          
          for ndx, route in enumerate(routes_to_check):
              if route.pattern == pattern and route.parameters == parameters:
                  return ndx, route
          else:
              return -1, None
docs: Check if a URL pattern exists in a list of routes provided based on
          the comparison of URL pattern and the parameters.
  
          :param pattern: URL parameter pattern
          :param routes_to_check: list of dynamic routes either hashable or
              unhashable routes.
          :param parameters: List of :class:`Parameter` items
          :return: Tuple of index and route if matching route exists else
              -1 for index and None for route