[Python-Dev] urllib.urlretrieve() and handling 550 errors when
reading from FTP
Guido van Rossum
guido at python.org
Mon Jul 12 05:55:39 CEST 2004
> > Why should I have to use a trailing backslash to get a directory
> > listing? That's not in the FTP standard and probably won't work
> > everywhere.
> It's the way the code is written for the FTP wrapper in urllib; has
> nothing to do with ftp.python.org or FTP. Basically the code checks to
> see if there is a trailing slash. If it does it assumes it is a
> directory and thus only requests a listing of the path from the server.
Ah, right. Sorry. Alzheimer is setting in early today. :-)
> Otherwise it tries to get the file. If that get fails (with a 550) it
> then decides to try getting a listing for the path. If that works it
> returns that, otherwise it completely fails.
> Basically I don't think there is a way to make this work for urllib
Depends on what you call nicely. I think of the current behavior as
"nice", because directories are a lot more common that files you can't
read in the typical ftp setup.
> If no one has any objections I will just clarify the docs
> stating that if an attempt to get a file fails on a 550 error (and of
> course I will say what that means) it will then try a LIST command and
> if that succeeds that is what is returned. And if you need more
> fine-grained control then use ftplib.
Sounds good to me. Thanks!
--Guido van Rossum (home page: http://www.python.org/~guido/)
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