homepage

>>> urllib.urlretrieve("ftp://ftp.zlatkovic.com/pub/libxml/md5sum.txt","t.bin")
('t.bin', <mimetools.Message instance at 0x00D8C5D0>)
>>> urllib.urlretrieve("ftp://ftp.zlatkovic.com/pub/libxml/md5sum.txt","t.bin")
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
 File "C:\Py\lib\urllib.py", line 98, in urlretrieve
 return opener.retrieve(url, filename, reporthook, data)
 File "C:\Py\lib\urllib.py", line 245, in retrieve
 fp = self.open(url, data)
 File "C:\Py\lib\urllib.py", line 213, in open
 return getattr(self, name)(url)
 File "C:\Py\lib\urllib.py", line 558, in open_ftp
 (fp, retrlen) = self.ftpcache[key].retrfile(file, type)
 File "C:\Py\lib\urllib.py", line 906, in retrfile
 conn, retrlen = self.ftp.ntransfercmd(cmd)
 File "C:\Py\lib\ftplib.py", line 334, in ntransfercmd
 host, port = self.makepasv()
 File "C:\Py\lib\ftplib.py", line 312, in makepasv
 host, port = parse227(self.sendcmd('PASV'))
 File "C:\Py\lib\ftplib.py", line 830, in parse227
 raise error_reply, resp
IOError: [Errno ftp error] 200 Type set to I
The cause is the 226 Transfer Complete response being ignored, causing further response lines to be incorrectly matched to request lines.
The bug is a result of issue16270 for 3.x and issue26960 for 2.7.