`ResourceDenied` raised in `TransientResource` but not imported in `test_urllib2net`

[The-Compiler]

Bug report

TransientResource was moved out of test.support in 311110a (GH-20812) by @vstinner, thus making ResourceDenied undefined here:

cpython/Lib/test/test_urllib2net.py

Line 60 in a458be3

raise ResourceDenied("an optional resource is not available")

I don't see how to best reproduce this, but I will open a PR with a fix.

(Found by running flake8 over Lib/ out of curiosity, see #93010 (comment))

Your environment

• CPython versions tested on: (not tested, but affects) Python 3.11.0b1, 3.10.4
• Operating system and architecture: Archlinux x86_64

[vstinner]

Ah right, do you want to propose a fix?

[The-Compiler]

@vstinner just did: #93113