PEP 814: Clarify immutable VS hashable values (#4743)

Author: vstinner

peps/pep-0814.rst

@@ -80,8 +80,8 @@ Construction
 * ``frozendict(collection, **kwargs)`` combines the two previous
   constructions.
 
-Keys must be hashable and therefore immutable, but values can be mutable.
-Using immutable values creates a hashable ``frozendict``.
+Keys must be hashable, but values can be non-hashable.
+Using hashable values creates a hashable ``frozendict``.
 
 Creating a ``frozendict`` from a ``dict``, ``frozendict(dict)``, has a
 complexity of *O*\ (*n*): items are copied (shallow copy).