Update tests and whatsnew for the 'quiet' flag
diff --git a/Doc/whatsnew/3.2.rst b/Doc/whatsnew/3.2.rst
index 51ebcd2..4ba871e 100644
--- a/Doc/whatsnew/3.2.rst
+++ b/Doc/whatsnew/3.2.rst
@@ -383,7 +383,14 @@
(Suggested by Mark Dickinson and implemented by Eric Smith in :issue:`7094`.)
* The interpreter can now be started with a quiet option, ``-q``, to suppress
- the copyright and version information in an interactive mode.
+ the copyright and version information in an interactive mode. The option can
+ be introspected using the :attr:`sys.flags` attribute::
+
+ $ python -q
+ >>> sys.flags
+ sys.flags(debug=0, division_warning=0, inspect=0, interactive=0,
+ optimize=0, dont_write_bytecode=0, no_user_site=0, no_site=0,
+ ignore_environment=0, verbose=0, bytes_warning=0, quiet=1)
(Contributed by Marcin Wojdyr in issue:`1772833`).