> Yet one bug: PR 30888 only changed the text output. But there is also the html output generator.

I'm not sure - if I revert the change like this:

         if isinstance(getattr(obj, name, None), __future__._Feature):
-            return False
+            pass # return False


then test_html_doc fails:


======================================================================
FAIL: test_html_doc (test.test_pydoc.PydocDocTest.test_html_doc)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/iritkatriel/src/cpython/Lib/test/test_pydoc.py", line 414, in test_html_doc
    self.assertEqual(text_lines, expected_lines)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: Lists differ: ['tes[1392 chars]t]', "print_function = _Feature((2, 6, 0, 'alp[156 chars]ody'] != ['tes[1392 chars]t]', 'type_union1 = typing.Union[int, str]', '[72 chars]ody']

First differing element 55:
"print_function = _Feature((2, 6, 0, 'alp[36 chars]576)"
'type_union1 = typing.Union[int, str]'

First list contains 1 additional elements.
First extra element 61:
'Nobody'

  ['test.pydoc_mod (version 1.2.3.4)',
   'This is a test module for test_pydoc',
   'Modules',
   'types',
   'typing',
   'Classes',
   'builtins.object',
   'A',
   'B',
   'C',
   'class A(builtins.object)',
   'Hello and goodbye',
   'Methods defined here:',
   '__init__()',
   'Wow, I have no function!',
   'Data descriptors defined here:',
   '__dict__',
   'dictionary for instance variables (if defined)',
   '__weakref__',
   'list of weak references to the object (if defined)',
   'class B(builtins.object)',
   'Data descriptors defined here:',
   '__dict__',
   'dictionary for instance variables (if defined)',
   '__weakref__',
   'list of weak references to the object (if defined)',
   'Data and other attributes defined here:',
   "NO_MEANING = 'eggs'",
   "__annotations__ = {'NO_MEANING': <class 'str'>}",
   'class C(builtins.object)',
   'Methods defined here:',
   'get_answer(self)',
   'Return say_no()',
   'is_it_true(self)',
   'Return self.get_answer()',
   'say_no(self)',
   'Class methods defined here:',
   '__class_getitem__(item) from builtins.type',
   'Data descriptors defined here:',
   '__dict__',
   'dictionary for instance variables (if defined)',
   '__weakref__',
   'list of weak references to the object (if defined)',
   'Functions',
   'doc_func()',
   "This function solves all of the world's problems:",
   'hunger',
   'lack of Python',
   'war',
   'nodoc_func()',
   'Data',
   "__xyz__ = 'X, Y and Z'",
   'c_alias = test.pydoc_mod.C[int]',
   'list_alias1 = typing.List[int]',
   'list_alias2 = list[int]',
-  "print_function = _Feature((2, 6, 0, 'alpha', 2), (3, 0, 0, 'alpha', 0), "
-  '1048576)',
   'type_union1 = typing.Union[int, str]',
   'type_union2 = int | str',
   'Author',
   'Benjamin Peterson',
   'Credits',
   'Nobody']