gh-123446: Fix empty function names in TypeErrors in _csv module (follow-up to gh-123461)

[sobolevn]

After:

>>> import csv
>>> csv.reader()
Traceback (most recent call last):
  File "<python-input-3>", line 1, in <module>
    csv.reader()
    ~~~~~~~~~~^^
TypeError: reader expected at least 1 argument, got 0
>>> csv.writer()
Traceback (most recent call last):
  File "<python-input-4>", line 1, in <module>
    csv.writer()
    ~~~~~~~~~~^^
TypeError: writer expected at least 1 argument, got 0
>>> csv.register_dialect()
Traceback (most recent call last):
  File "<python-input-5>", line 1, in <module>
    csv.register_dialect()
    ~~~~~~~~~~~~~~~~~~~~^^
TypeError: register_dialect expected at least 1 argument, got 0

Follow up to #123461

• Issue: PyArg_UnpackTuple is used with name="" #123446

[serhiy-storchaka]

LGTM.

BTW, @sobolevn is a core developer and can merge his PRs.

[hauntsaninja]

Oh right, for a while sobolevn didn't want to be one :-) Sorry for the early merge!

[sobolevn]

@hauntsaninja no worries, no harm done :)
Thanks everyone! 👏

[miss-islington-app]

Thanks @sobolevn for the PR 🌮🎉.. I'm working now to backport this PR to: 3.12, 3.13.
🐍🍒⛏🤖

[miss-islington-app]

Sorry, @sobolevn, I could not cleanly backport this to 3.13 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 58ce131037ecb34d506a613f21993cde2056f628 3.13

[miss-islington-app]

Sorry, @sobolevn, I could not cleanly backport this to 3.12 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 58ce131037ecb34d506a613f21993cde2056f628 3.12

[bedevere-app]

GH-123466 is a backport of this pull request to the 3.12 branch.

[picnixz]

I just changed the title otherwise I thought there were twice the same PR on the tracker :')

[serhiy-storchaka]

I am not sure that it is worth to backport this change. This is just a minor enhancement in error messages.

[sobolevn]

I am not sure that it is worth to backport this change. This is just a minor enhancement in error messages.

Ok, I can close them 👍