[3.12] Docs: mark up the FTP debug levels as a list (GH-114360) (#114375)

(cherry picked from commit fbc28748eaf578436ef9662363575f6bdde2e2f7)

Co-authored-by: Erlend E. Aasland <erlend@python.org>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

diff --git a/Doc/library/ftplib.rst b/Doc/library/ftplib.rst
index 648956b7b66772bb08c7d594544e420cf26d37a7..16ad3a8b7f2d825feb819556992e77f13f99ac5b 100644 (file)
--- a/Doc/library/ftplib.rst
+++ b/Doc/library/ftplib.rst
@@ -102,12 +102,15 @@ FTP objects
 
    .. method:: FTP.set_debuglevel(level)
 
-      Set the instance's debugging level.  This controls the amount of debugging
-      output printed.  The default, ``0``, produces no debugging output.  A value of
-      ``1`` produces a moderate amount of debugging output, generally a single line
-      per request.  A value of ``2`` or higher produces the maximum amount of
-      debugging output, logging each line sent and received on the control connection.
-
+      Set the instance's debugging level as an :class:`int`.
+      This controls the amount of debugging output printed.
+      The debug levels are:
+
+      * ``0`` (default): No debug output.
+      * ``1``: Produce a moderate amount of debug output,
+        generally a single line per request.
+      * ``2`` or higher: Produce the maximum amount of debugging output,
+        logging each line sent and received on the control connection.
 
    .. method:: FTP.connect(host='', port=0, timeout=None, source_address=None)