What errors does discord.py hide by default?

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I've seen mentioned in many posts on Stack Overflow that discord.py "hides errors" by default, if logging is not configured. In the docs, it is mentioned that:

It is strongly recommended that the logging module is configured, as no errors or warnings will be output if it is not set up. [emphasis mine]

However, in discord.py 1.7.3, I observed that errors are outputted to the console. Running the following code snippet:

import discord

client = discord.Client(intents=discord.Intents.all())


@client.event
async def on_ready():
    raise ValueError

client.run(TOKEN)

properly raises a ValueError - the error is not swallowed.

In discord.py 2.0, logging is already set up, as evidenced by the output (with the same code snippet):

[2022-07-15 12:28:40] [INFO    ] discord.client: logging in using static token
[2022-07-15 12:28:41] [INFO    ] discord.gateway: Shard ID None has sent the IDENTIFY payload.
[2022-07-15 12:28:41] [INFO    ] discord.gateway: Shard ID None has connected to Gateway (Session ID: ...).
[2022-07-15 12:28:43] [ERROR   ] discord.client: Ignoring exception in on_ready
# ^-----------------^ These lines are all from the logging module
Traceback (most recent call last):
  File "C:\Users\TheFu\PycharmProjects\mcve2.0\venv\lib\site-packages\discord\client.py", line 456, in _run_event
    await coro(*args, **kwargs)
  File "C:\Users\TheFu\PycharmProjects\mcve2.0\main.py", line 8, in on_ready
    raise ValueError
ValueError

So, if logging hasn't been set up in discord.py 1.7.3, why is an error outputted? What errors do get swallowed in this version?



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