pi@test:~/rxv-0.5.0/rxv $ python3 ssdp.py

[RxvDetails(ctrl_url='http://192.168.0.19:80/YamahaRemoteControl/ctrl', unit_desc_url='http://192.168.0.19:80/YamahaRemoteControl/desc.xml', model_name='RX-A1040', friendly_name='Yamaha')]

pi@test:~/rxv-0.5.0/rxv $ python test.py
Traceback (most recent call last):
  File "test.py", line 1, in <module>
    import rxv
  File "/home/pi/rxv-0.5.0/rxv/rxv.py", line 16, in <module>
    from .exceptions import MenuUnavailable, PlaybackUnavailable, ResponseException, UnknownPort
ValueError: Attempted relative import in non-package

pi@test:~/rxv-0.5.0/rxv $ python3 rxv.py
Traceback (most recent call last):
  File "rxv.py", line 16, in <module>
    from .exceptions import MenuUnavailable, PlaybackUnavailable, ResponseException, UnknownPort
SystemError: Parent module '' not loaded, cannot perform relative import

pi@test:~/rxv-0.5.0/rxv $