handle cases when other is a single element

demo/example_controller4.py

demo/example_controller5.py

demo/example_controller6.py

demo/example_controller7.py

demo/example_controller8.py

demo/example_controller9.py

dryvr_plus_plus/scene_verifier/code_parser/parser.py

dryvr_plus_plus/scene_verifier/scenario/scenario.py

dryvr_plus_plus/scene_verifier/sensor/base_sensor.py