Issue #28022: Deprecate ssl-related arguments in favor of SSLContext.
The deprecation include manual creation of SSLSocket and certfile/keyfile
(or similar) in ftplib, httplib, imaplib, smtplib, poplib and urllib.
ssl.wrap_socket() is not marked as deprecated yet.
diff --git a/Lib/ftplib.py b/Lib/ftplib.py
index ee2a137..8f36f53 100644
--- a/Lib/ftplib.py
+++ b/Lib/ftplib.py
@@ -728,6 +728,10 @@
if context is not None and certfile is not None:
raise ValueError("context and certfile arguments are mutually "
"exclusive")
+ if keyfile is not None or certfile is not None:
+ import warnings
+ warnings.warn("keyfile and certfile are deprecated, use a"
+ "custom context instead", DeprecationWarning, 2)
self.keyfile = keyfile
self.certfile = certfile
if context is None: