gh-111681: minor fixes to typing doctests; remove unused imports in test_typing (#111682)

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>

Doc/library/typing.rst

@@ -1954,7 +1954,7 @@ without the dedicated syntax, as documented below.
 
    .. doctest::
 
-      >>> from typing import ParamSpec
+      >>> from typing import ParamSpec, get_origin
       >>> P = ParamSpec("P")
       >>> get_origin(P.args) is P
       True
@@ -3059,14 +3059,14 @@ Introspection helpers
 
    Return the set of members defined in a :class:`Protocol`.
 
-   ::
+   .. doctest::
 
       >>> from typing import Protocol, get_protocol_members
       >>> class P(Protocol):
       ...     def a(self) -> str: ...
       ...     b: int
-      >>> get_protocol_members(P)
-      frozenset({'a', 'b'})
+      >>> get_protocol_members(P) == frozenset({'a', 'b'})
+      True
 
    Raise :exc:`TypeError` for arguments that are not Protocols.
 

Lib/test/test_typing.py

@@ -9,8 +9,7 @@
 import pickle
 import re
 import sys
-import warnings
-from unittest import TestCase, main, skipUnless, skip
+from unittest import TestCase, main, skip
 from unittest.mock import patch
 from copy import copy, deepcopy
 
@@ -45,7 +44,7 @@
 import weakref
 import types
 
-from test.support import import_helper, captured_stderr, cpython_only
+from test.support import captured_stderr, cpython_only
 from test import mod_generics_cache
 from test import _typed_dict_helper