gh-85045: clarified that the underlying buffer of a TextIOBase can be a RawIOBase (GH-134372)

AlexKautz · web-flow · commit 36eb711d2f26 · 2025-05-20T18:18:58.000Z
Added a clarification that the underlying binary buffer of a TextIOBase can be a BufferedIOBase OR a RawIOBase
diff --git a/Doc/library/io.rst b/Doc/library/io.rst
@@ -894,9 +894,10 @@ Text I/O
 
    .. attribute:: buffer
 
-      The underlying binary buffer (a :class:`BufferedIOBase` instance) that
-      :class:`TextIOBase` deals with.  This is not part of the
-      :class:`TextIOBase` API and may not exist in some implementations.
+      The underlying binary buffer (a :class:`BufferedIOBase`
+      or :class:`RawIOBase` instance) that :class:`TextIOBase` deals with.
+      This is not part of the :class:`TextIOBase` API and may not exist
+      in some implementations.
 
    .. method:: detach()
 
