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Do not assume that assertions are enabled #90

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@jfly jfly commented Dec 29, 2021

Trying to access self._scenes_cache only works after self.scenes()
has been invoked. Normally, the previous line of code (assert scene_name in self.scenes()) would cause an invocation of
self.scenes() (and thereby populate self._scenes_cache), but that
doesn't actually happen if assertions are disabled!

Before this change

$ PYTHONOPTIMIZE=1 python -c 'import rxv; rxv.RXV("http://receiver/YamahaRemoteControl/ctrl").scene = "BD/DVD"; print("success!")'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/jeremy/src/github.com/wuub/rxv/rxv/rxv.py", line 457, in scene
    scene_number = self._scenes_cache.get(scene_name)
AttributeError: 'NoneType' object has no attribute 'get'

After this change

$ PYTHONOPTIMIZE=1 python -c 'import rxv; rxv.RXV("http://receiver/YamahaRemoteControl/ctrl").scene = "BD/DVD"; print("success!")'
success!

Trying to access `self._scenes_cache` only works after `self.scenes()`
has been invoked. Normally, the previous line of code (`assert
scene_name in self.scenes()`) would cause an invocation of
`self.scenes()` (and thereby populate `self._scenes_cache`), but that
doesn't actually happen if assertions are disabled!

Before this change
==================

    $ PYTHONOPTIMIZE=1 python -c 'import rxv; rxv.RXV("http://receiver/YamahaRemoteControl/ctrl").scene = "BD/DVD"; print("success!")'
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/home/jeremy/src/github.com/wuub/rxv/rxv/rxv.py", line 457, in scene
        scene_number = self._scenes_cache.get(scene_name)
    AttributeError: 'NoneType' object has no attribute 'get'

After this change
=================

    $ PYTHONOPTIMIZE=1 python -c 'import rxv; rxv.RXV("http://receiver/YamahaRemoteControl/ctrl").scene = "BD/DVD"; print("success!")'
    success!
@jfly
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jfly commented May 4, 2022

@wuub any chance of getting this merged up?

@jfly
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jfly commented Oct 29, 2023

@wuub quick ping!

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