[Python-Dev] urllib.urlretrieve() and handling 550 errors when
reading from FTP
bac at OCF.Berkeley.EDU
Sun Jul 11 21:08:51 CEST 2004
Guido van Rossum wrote:
> 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
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.
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
nicely. 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.
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