Issue #23881: urllib.request.ftpwrapper constructor now closes the socket if

the FTP connection failed to fix a ResourceWarning.

Lib/urllib/request.py

@@ -2240,7 +2240,11 @@ class ftpwrapper:
         self.timeout = timeout
         self.refcount = 0
         self.keepalive = persistent
-        self.init()
+        try:
+            self.init()
+        except:
+            self.close()
+            raise
 
     def init(self):
         import ftplib

Misc/NEWS

@@ -24,6 +24,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #23881: urllib.request.ftpwrapper constructor now closes the socket if
+  the FTP connection failed to fix a ResourceWarning.
+
 - Issue #15133: _tkinter.tkapp.getboolean() now supports Tcl_Obj and always
   returns bool.  tkinter.BooleanVar now validates input values (accepted bool,
   int, str, and Tcl_Obj).  tkinter.BooleanVar.get() now always returns bool.