[Audio] Remove players which no longer have a guild.

[mikeshardmind]

Type

• Bugfix
• Enhancement
• New feature

Description of the changes

Cleanup players when the bot has one for a guild it leaves.

[PredaaA]

I tested this PR, but I've this error when the bot quit a guild.

Traceback (most recent call last):
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\discord\client.py", line 230, in _run_event
    await coro(*args, **kwargs)
  File "C:\Users\Administrator\Desktop\cogs_modified\audio\audio.py", line 3195, in on_guild_remove
    for y in {g.voice_channels for g in self.bot.guilds}
  File "C:\Users\Administrator\Desktop\cogs_modified\audio\audio.py", line 3195, in <setcomp>
    for y in {g.voice_channels for g in self.bot.guilds}
TypeError: unhashable type: 'list'
[09/Feb/2019 14:45:29] ERROR - Exception in guild_remove
Traceback (most recent call last):
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\discord\client.py", line 230, in _run_event
    await coro(*args, **kwargs)
  File "C:\Users\Administrator\Desktop\cogs_modified\audio\audio.py", line 3195, in on_guild_remove
    for y in {g.voice_channels for g in self.bot.guilds}
  File "C:\Users\Administrator\Desktop\cogs_modified\audio\audio.py", line 3195, in <setcomp>
    for y in {g.voice_channels for g in self.bot.guilds}
TypeError: unhashable type: 'list'

[mikeshardmind]

I tested this PR, but I've this error when the bot quit a guild.

Traceback (most recent call last):
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\discord\client.py", line 230, in _run_event
    await coro(*args, **kwargs)
  File "C:\Users\Administrator\Desktop\cogs_modified\audio\audio.py", line 3195, in on_guild_remove
    for y in {g.voice_channels for g in self.bot.guilds}
  File "C:\Users\Administrator\Desktop\cogs_modified\audio\audio.py", line 3195, in <setcomp>
    for y in {g.voice_channels for g in self.bot.guilds}
TypeError: unhashable type: 'list'
[09/Feb/2019 14:45:29] ERROR - Exception in guild_remove
Traceback (most recent call last):
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\discord\client.py", line 230, in _run_event
    await coro(*args, **kwargs)
  File "C:\Users\Administrator\Desktop\cogs_modified\audio\audio.py", line 3195, in on_guild_remove
    for y in {g.voice_channels for g in self.bot.guilds}
  File "C:\Users\Administrator\Desktop\cogs_modified\audio\audio.py", line 3195, in <setcomp>
    for y in {g.voice_channels for g in self.bot.guilds}
TypeError: unhashable type: 'list'

🤦‍♂️ Fixed.

[PredaaA]

I have tested it and it works well now.

[Tobotimus]

You can bump the version of red-lavalink to 0.2.2 in setup.cfg and use player.destroy() if you'd like