bpo-43532: add version added to KW_ONLY (GH-31235)

henryiii · web-flow · commit 5a3f97291eea · 2022-02-09T12:56:10.000-08:00
Minor missing version note mentioned at the end of  (and affected me independently before reading that note).

Automerge-Triggered-By: GH:ericvsmith
diff --git a/Doc/library/dataclasses.rst b/Doc/library/dataclasses.rst
@@ -475,6 +475,8 @@ Module contents
    In a single dataclass, it is an error to specify more than one
    field whose type is :const:`KW_ONLY`.
 
+   .. versionadded:: 3.10
+
 .. exception:: FrozenInstanceError
 
    Raised when an implicitly defined :meth:`__setattr__` or
