Issue #19795: Mark up None as literal text.
diff --git a/Doc/library/inspect.rst b/Doc/library/inspect.rst
index c1b7bec..ec23d4f 100644
--- a/Doc/library/inspect.rst
+++ b/Doc/library/inspect.rst
@@ -95,8 +95,9 @@
| | gi_code | code object | |
+-----------+-----------------+---------------------------+-------+
| | gi_frame | frame object or possibly | |
-| | | None once the generator | |
-| | | has been exhausted | |
+| | | ``None`` once the | |
+| | | generator has been | |
+| | | exhausted | |
+-----------+-----------------+---------------------------+-------+
| | gi_running | set to 1 when generator | |
| | | is executing, 0 otherwise | |
@@ -478,7 +479,7 @@
four things is returned: ``(args, varargs, keywords, defaults)``. *args* is a
list of the argument names (it may contain nested lists). *varargs* and
*keywords* are the names of the ``*`` and ``**`` arguments or
- ``None``. *defaults* is a tuple of default argument values or None if there
+ ``None``. *defaults* is a tuple of default argument values or ``None`` if there
are no default arguments; if this tuple has *n* elements, they correspond to
the last *n* elements listed in *args*.