[BUG] When accessing the parameters of lanelet::AllWayStop/lanelet::RightOfWays, an infinite loop occurs

[Joe12138]

When I want to accessing the parameters of lanelet::AllWayStop/lanelet::RightOfWays, an infinite loop occurs.
The code is as below:

for reg_ele_obj in lanelet_map.regulatoryElementLayer:
      if reg_ele_obj.attributes["subtype"] == "right_of_way":
            parameter_dict = reg_ele_obj.parameters
            right_of_way_lanelets = reg_ele_obj.rightOfWayLanelets()
            yield_lanelets = reg_ele_obj.yieldLanelets()
            stop_line = reg_ele_obj.stopLine
            refers = parameter_dict["refers"]
            refer_line = parameter_dict["ref_line"]
            print("Hello world!")
            print(parameter_dict.values())
      elif reg_ele_obj.attributes["subtype"] == "all_way_stop":
            lanelets = reg_ele_obj.lanelets()
            stop_lines = reg_ele_obj.stopLines()
            traffic_signs = reg_ele_obj.trafficSigns()
            parameter_dict = reg_ele_obj.parameters
            refers = parameter_dict["refers"]
            refer_line = parameter_dict["ref_line"]
            
            print(parameter_dict.keys())
            print(parameter_dict.values())

The error is shown as below:

File "hd_map_lanelet.py", line 255, in <module>
    print(parameter_dict.values())
RecursionError: maximum recursion depth exceeded while calling a Python object

Version: lanelet2 1.2.2 (Python3.9.21, Ubuntu 22.04 LTS)

[poggenhans]

Thanks for reporting this! Can you please create a standalone example so that we can reproduce your bug? I suspect there is some kind of loop in the parameters of your lanelets that causes the print function to recurse. But hard to tell without the actual data.