Issue 22461: Test failure: Lib/test/test_pydoc.py line 851, "topic?key=def"

I get a test failure in the regression test suite.  This appears to be the important bit:

    Traceback (most recent call last):
      File "/tmp/Python-3.4.2rc1/Lib/test/test_pydoc.py", line 851, in test_url_requests
        self.assertEqual(result, title, text)
    AssertionError: 'Pydoc: Error - topic?key=def' != 'Pydoc: KEYWORD def'
    - Pydoc: Error - topic?key=def
    + Pydoc: KEYWORD def

I can ship 3.4.2rc1 like this, but I'd really like this fixed before 3.4.2 final.

Does anybody own pydoc?  There's no "expert" listed on the Python Experts page.

(Adding you, Georg, because you're the DE.)

I have no idea about that code, and I can't reproduce the failure.

(Could the buildbots?)

I can't reproduce it either, and none of the failing stable buildbots show this error.  Unfortunately we can only look at tip since we can't see your tag yet.  But I doubt that's the issue...the last commit to pydoc or its tests was on the 17th, and was a one line change in an unrelated area.  Last change before that was in June.

FWIW, 3.4.2rc1 is based on 7af0315bdfe0.  (The release process creates a couple additional changesets.)

The failure is on my laptop, Ubuntu 14.04 x64.

No failure running test_pydoc for me on gentoo linux with that changeset.

R. David Murray wrote (on python-committers):
> So...Larry broke it, but it is not obvious how.  Could it be something
> wrong with the pydoc topics update for the release?

Indeed, it looks like somehow the pydoc-topics update turned all of the values in the topics dict into bytes literals rather than plain strings.

Unfortunately, I don't have the right setup currently to look into it further, but my best guess would be that perhaps the pydoc-topics Sphinx builder needs an update for Python 3?

That is very likely the reason. So far nobody has run the builder with Python 3.

Duplicate of Issue21431?

Yep.