bpo-31307: Make ConfigParser.read() accept bytes objects (GH-3420)


diff --git a/Doc/library/configparser.rst b/Doc/library/configparser.rst
index acca647..dd82577 100644
--- a/Doc/library/configparser.rst
+++ b/Doc/library/configparser.rst
@@ -995,7 +995,8 @@
       Attempt to read and parse a list of filenames, returning a list of
       filenames which were successfully parsed.
 
-      If *filenames* is a string or :term:`path-like object`, it is treated as
+      If *filenames* is a string, a :class:`bytes` object or a
+      :term:`path-like object`, it is treated as
       a single filename.  If a file named in *filenames* cannot be opened, that
       file will be ignored.  This is designed so that you can specify a list of
       potential configuration file locations (for example, the current
@@ -1022,6 +1023,9 @@
       .. versionadded:: 3.6.1
          The *filenames* parameter accepts a :term:`path-like object`.
 
+      .. versionadded:: 3.7
+         The *filenames* parameter accepts a :class:`bytes` object.
+
 
    .. method:: read_file(f, source=None)