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-rw-r--r--Lib/ftplib.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/Lib/ftplib.py b/Lib/ftplib.py
index d2ff435..eee8e5a 100644
--- a/Lib/ftplib.py
+++ b/Lib/ftplib.py
@@ -437,6 +437,8 @@ class FTP:
except error_perm, msg:
if msg[:3] != '500':
raise error_perm, msg
+ elif dirname == '':
+ dirname = '.' # does nothing, but could return error
cmd = 'CWD ' + dirname
return self.voidcmd(cmd)