bpo-44001: improve Literal documentation (GH-25877)

JelleZijlstra · web-flow · commit 87109f4d85c9 · 2021-05-04T10:54:12.000+02:00
diff --git a/Doc/library/typing.rst b/Doc/library/typing.rst
@@ -799,10 +799,10 @@ These can be used as types in annotations using ``[]``, each having a unique syn
    .. versionadded:: 3.8
 
    .. versionchanged:: 3.9.1
-      ``Literal`` now de-duplicates parameters.  Equality comparison of
+      ``Literal`` now de-duplicates parameters.  Equality comparisons of
       ``Literal`` objects are no longer order dependent. ``Literal`` objects
       will now raise a :exc:`TypeError` exception during equality comparisons
-      if one of their parameters are not :term:`immutable`.
+      if one of their parameters are not :term:`hashable`.
 
 .. data:: ClassVar
 
diff --git a/Doc/whatsnew/3.10.rst b/Doc/whatsnew/3.10.rst
@@ -1271,8 +1271,8 @@ and to match the behavior of static type checkers specified in the PEP.
    now ``False``.  To support this change, the internally used type cache now
    supports differentiating types.
 4. ``Literal`` objects will now raise a :exc:`TypeError` exception during
-   equality comparisons if one of their parameters are not :term:`immutable`.
-   Note that declaring ``Literal`` with mutable parameters will not throw
+   equality comparisons if any of their parameters are not :term:`hashable`.
+   Note that declaring ``Literal`` with unhashable parameters will not throw
    an error::
 
       >>> from typing import Literal
diff --git a/Doc/whatsnew/3.9.rst b/Doc/whatsnew/3.9.rst
@@ -1494,7 +1494,7 @@ and to match the behavior of static type checkers specified in the PEP.
    now ``False``.  To support this change, the internally used type cache now
    supports differentiating types.
 4. ``Literal`` objects will now raise a :exc:`TypeError` exception during
-   equality comparisons if one of their parameters are not :term:`immutable`.
+   equality comparisons if any of their parameters are not :term:`hashable`.
    Note that declaring ``Literal`` with mutable parameters will not throw
    an error::
 
