bpo-44135: Refine explanation of how passing tuples to issubclass() behaves (GH-26193)

zkneupper · web-flow · commit 08767c73b5bf · 2021-08-31T15:39:19.000+02:00
Co-authored-by: Zachary Kneupper &lt;zachary.kneupper@gmail.com&gt;
diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
@@ -916,9 +916,9 @@ are always available.  They are listed here in alphabetical order.
    Return ``True`` if *class* is a subclass (direct, indirect, or :term:`virtual
    <abstract base class>`) of *classinfo*.  A
    class is considered a subclass of itself. *classinfo* may be a tuple of class
-   objects or a :ref:`types-union`, in which case every entry in *classinfo*
-   will be checked. In any other
-   case, a :exc:`TypeError` exception is raised.
+   objects or a :ref:`types-union`, in which case return True if *class* is a
+   subclass of any entry in *classinfo*.  In any other case, a :exc:`TypeError`
+   exception is raised.
 
    .. versionchanged:: 3.10
       *classinfo* can be a :ref:`types-union`.
