bpo-43504: Remove effbot urls

[E-Paine]

Note: I have changed the reference in Objects/stringlib/fastsearch.h to the Wayback machine because (IMO) this content is still required.

Note: I have not changed the XML tests where effbot is used as a namespace.

https://bugs.python.org/issue43504

[JulienPalard]

Thanks @E-Paine !

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot x86 Gentoo Non-Debug with X 3.x has failed when building commit e9f66ae.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/58/builds/238) and take a look at the build logs.
4. Check if the failure is related to this commit (e9f66ae) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/58/builds/238

Failed tests:

• test_idle

Failed subtests:

• test_incremental_editing - idlelib.idle_test.test_colorizer.ColorDelegatorTest

Summary of the results of the build (if available):

== Tests result: FAILURE then FAILURE ==

416 tests OK.

10 slowest tests:

• test_peg_generator: 13 min 9 sec
• test_concurrent_futures: 3 min 58 sec
• test_unparse: 3 min 22 sec
• test_tokenize: 3 min 4 sec
• test_asyncio: 2 min 32 sec
• test_lib2to3: 2 min 29 sec
• test_multiprocessing_spawn: 2 min 25 sec
• test_multiprocessing_forkserver: 1 min 19 sec
• test_pickle: 1 min 4 sec
• test_multiprocessing_fork: 1 min 4 sec

1 test failed:
test_idle

10 tests skipped:
test_ctypes test_devpoll test_ioctl test_kqueue test_msilib
test_startfile test_winconsoleio test_winreg test_winsound
test_zipfile64

1 re-run test:
test_idle

Total duration: 33 min 59 sec

Click to see traceback logs

Traceback (most recent call last):
  File "/buildbot/buildarea/cpython/3.x.ware-gentoo-x86.nondebug/build/Lib/idlelib/idle_test/tkinter_testing_utils.py", line 54, in new_test_method
    raise exception
  File "/buildbot/buildarea/cpython/3.x.ware-gentoo-x86.nondebug/build/Lib/idlelib/idle_test/tkinter_testing_utils.py", line 38, in after_callback
    next(test_generator)
  File "/buildbot/buildarea/cpython/3.x.ware-gentoo-x86.nondebug/build/Lib/idlelib/idle_test/test_colorizer.py", line 569, in test_incremental_editing
    eq(text.tag_nextrange('KEYWORD', '1.0'), ('1.0', '1.2'))
AssertionError: Tuples differ: () != ('1.0', '1.2')


Traceback (most recent call last):
  File "/buildbot/buildarea/cpython/3.x.ware-gentoo-x86.nondebug/build/Lib/idlelib/idle_test/tkinter_testing_utils.py", line 54, in new_test_method
    raise exception
  File "/buildbot/buildarea/cpython/3.x.ware-gentoo-x86.nondebug/build/Lib/idlelib/idle_test/tkinter_testing_utils.py", line 38, in after_callback
    next(test_generator)
  File "/buildbot/buildarea/cpython/3.x.ware-gentoo-x86.nondebug/build/Lib/idlelib/idle_test/test_colorizer.py", line 578, in test_incremental_editing
    eq(text.tag_nextrange('BUILTIN', '1.0'), ())
AssertionError: Tuples differ: ('1.0', '1.3') != ()

[E-Paine]

This PR cannot have caused these failures, so they are safe to ignore (it's just IDLE)

[miss-islington]

Thanks @E-Paine for the PR, and @JulienPalard for merging it 🌮🎉.. I'm working now to backport this PR to: 3.9.
🐍🍒⛏🤖

[miss-islington]

Thanks @E-Paine for the PR, and @JulienPalard for merging it 🌮🎉.. I'm working now to backport this PR to: 3.10.
🐍🍒⛏🤖

[miss-islington]

Sorry, @E-Paine and @JulienPalard, I could not cleanly backport this to 3.9 due to a conflict.
Please backport using cherry_picker on command line.
cherry_picker e9f66aedf44ccc3be27975cfb070a44ce6a6bd13 3.9

[miss-islington]

Sorry @E-Paine and @JulienPalard, I had trouble checking out the 3.10 backport branch.
Please backport using cherry_picker on command line.
cherry_picker e9f66aedf44ccc3be27975cfb070a44ce6a6bd13 3.10

[JelleZijlstra]

I'm working with a contributor at the sprints to get this fixed in 3.9 and 3.10.

[bedevere-bot]

GH-92161 is a backport of this pull request to the 3.10 branch.

[bedevere-bot]

GH-92162 is a backport of this pull request to the 3.9 branch.