bpo-23952: Document cgi module's maxlen variable

[hugovk]

Using the text suggested in https://bugs.python.org/issue23952.

I think this documentation-only change can skip a NEWS file.

https://bugs.python.org/issue23952

[rhettinger]

This is a good start. Please also update the main docs at Docs/library/cgi.rst.

[bedevere-bot]

A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

Once you have made the requested changes, please leave a comment on this pull request containing the phrase I have made the requested changes; please review again. I will then notify any core developers who have left a review that you're ready for them to take another look at this pull request.

[hugovk]

This is a good start. Please also update the main docs at Docs/library/cgi.rst.

Updated!

I have made the requested changes; please review again.

[bedevere-bot]

Thanks for making the requested changes!

@rhettinger: please review the changes made to this pull request.

[bedevere-bot]

A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

Once you have made the requested changes, please leave a comment on this pull request containing the phrase I have made the requested changes; please review again. I will then notify any core developers who have left a review that you're ready for them to take another look at this pull request.

[hugovk]

I have made the requested changes; please review again

[bedevere-bot]

Thanks for making the requested changes!

@rhettinger, @ethanfurman: please review the changes made to this pull request.

[github-actions]

This PR is stale because it has been open for 30 days with no activity.

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @ethanfurman for commit 90442ca 🤖

If you want to schedule another build, you need to add the ":hammer: test-with-buildbots" label again.

[hugovk]

test_issue16464 (test.test_urllib2.MiscTests) ... ERROR failed with urllib.error.HTTPError: HTTP Error 404: Not Found.

Details

test_issue16464 (test.test_urllib2.MiscTests) ... ERROR
======================================================================
ERROR: test_issue16464 (test.test_urllib2.MiscTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/dje/cpython-buildarea/pull_request.edelsohn-rhel-z.refleak/build/Lib/contextlib.py", line 155, in __exit__
    self.gen.throw(typ, value, traceback)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/dje/cpython-buildarea/pull_request.edelsohn-rhel-z.refleak/build/Lib/test/support/socket_helper.py", line 245, in transient_internet
    yield
    ^^^^^
  File "/home/dje/cpython-buildarea/pull_request.edelsohn-rhel-z.refleak/build/Lib/test/test_urllib2.py", line 1803, in test_issue16464
    opener.open(request, "1234567890".encode("us-ascii"))
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/dje/cpython-buildarea/pull_request.edelsohn-rhel-z.refleak/build/Lib/urllib/request.py", line 525, in open
    response = meth(req, response)
               ^^^^^^^^^^^^^^^^^^^
  File "/home/dje/cpython-buildarea/pull_request.edelsohn-rhel-z.refleak/build/Lib/urllib/request.py", line 634, in http_response
    response = self.parent.error(
               ^^^^^^^^^^^^^^^^^^
  File "/home/dje/cpython-buildarea/pull_request.edelsohn-rhel-z.refleak/build/Lib/urllib/request.py", line 563, in error
    return self._call_chain(*args)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/dje/cpython-buildarea/pull_request.edelsohn-rhel-z.refleak/build/Lib/urllib/request.py", line 496, in _call_chain
    result = func(*args)
             ^^^^^^^^^^^
  File "/home/dje/cpython-buildarea/pull_request.edelsohn-rhel-z.refleak/build/Lib/urllib/request.py", line 643, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
urllib.error.HTTPError: HTTP Error 404: Not Found

https://buildbot.python.org/all/#/builders/217/builds/431/steps/5/logs/stdio

Likely unrelated to this docs change, so rescheduling.

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @hugovk for commit 90442ca 🤖

If you want to schedule another build, you need to add the ":hammer: test-with-buildbots" label again.

[hugovk]

Same thing. The test_issue16464 failure is unrelated; https://bugs.python.org/issue46648 / #31146 / #31148.