Run more inspect.rst code snippets in CI (#112654)

Doc/library/inspect.rst

@@ -392,7 +392,11 @@ attributes (see :ref:`import-mod-attrs` for module attributes):
    Return ``True`` if the object can be used in :keyword:`await` expression.
 
    Can also be used to distinguish generator-based coroutines from regular
-   generators::
+   generators:
+
+   .. testcode::
+
+      import types
 
       def gen():
           yield
@@ -409,7 +413,9 @@ attributes (see :ref:`import-mod-attrs` for module attributes):
 .. function:: isasyncgenfunction(object)
 
    Return ``True`` if the object is an :term:`asynchronous generator` function,
-   for example::
+   for example:
+
+   .. doctest::
 
       >>> async def agen():
       ...     yield 1
@@ -985,7 +991,7 @@ function.
       For variable-keyword arguments (``**kwargs``) the default is an
       empty dict.
 
-      ::
+      .. doctest::
 
          >>> def foo(a, b='ham', *args): pass
          >>> ba = inspect.signature(foo).bind('spam')
@@ -996,7 +1002,9 @@ function.
       .. versionadded:: 3.5
 
    The :attr:`args` and :attr:`kwargs` properties can be used to invoke
-   functions::
+   functions:
+
+   .. testcode::
 
       def test(a, *, b):
           ...
@@ -1115,7 +1123,9 @@ Classes and functions
    ``**`` arguments, if any) to their values from *args* and *kwds*. In case of
    invoking *func* incorrectly, i.e. whenever ``func(*args, **kwds)`` would raise
    an exception because of incompatible signature, an exception of the same type
-   and the same or similar message is raised. For example::
+   and the same or similar message is raised. For example:
+
+   .. doctest::
 
       >>> from inspect import getcallargs
       >>> def f(a, b=1, *pos, **named):