From 3ddf8e337027953dd7da4c599acc6bab98cfd962 Mon Sep 17 00:00:00 2001
From: "Michael W. Hudson" <mwh@python.net>
Date: Mon, 11 Mar 2002 10:20:36 +0000
Subject: [PATCH] backport loewis' checkin of     revision 1.66 of ftplib.py

Access the exception argument to see whether it starts with '500'.
Fixes #527855.
---
 Lib/ftplib.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Lib/ftplib.py b/Lib/ftplib.py
index 2eb3cb295604..01895fd66862 100644
--- a/Lib/ftplib.py
+++ b/Lib/ftplib.py
@@ -492,8 +492,8 @@ class FTP:
             try:
                 return self.voidcmd('CDUP')
             except error_perm, msg:
-                if msg[:3] != '500':
-                    raise error_perm, msg
+                if msg.args[0][:3] != '500':
+                    raise
         elif dirname == '':
             dirname = '.'  # does nothing, but could return error
         cmd = 'CWD ' + dirname
-- 
2.47.3