ftplib callbacks

[Matija Papec]

I would like to reimplement ftplib "nlst" using ftplib.dir (ftp server
doesn't support nlst) so I'm trying to guess how to use ftp callbacks.
Any help is appreciated.
tia!

============
#!/usr/bin/python

# nlst vs list

import pprint
pp = pprint.PrettyPr inter(indent=4)

import ftplib

def myfilter(line):
return line

ftp = ftplib.FTP("loc alhost")
ftp.login("mpap ec", "island88")
#print ftp.retrlines(" LIST")
dir = ftp.dir("", myfilter)
print dir


--
Matija

[Steve Holden]

Re: ftplib callbacks

Matija Papec wrote:
[color=blue]
> I would like to reimplement ftplib "nlst" using ftplib.dir (ftp server
> doesn't support nlst) so I'm trying to guess how to use ftp callbacks.
> Any help is appreciated.
> tia!
>
> ============
> #!/usr/bin/python
>
> # nlst vs list
>
> import pprint
> pp = pprint.PrettyPr inter(indent=4)
>
> import ftplib
>
> def myfilter(line):
> return line
>
> ftp = ftplib.FTP("loc alhost")
> ftp.login("mpap ec", "island88")
> #print ftp.retrlines(" LIST")
> dir = ftp.dir("", myfilter)
> print dir
>
>[/color]
The callback is called each time the FTP client softwrae has something
to deal with. Try (untested):

lines = []

def myfilter(line):
global lines
lines.append(li ne)

with the remainder of your code unchanged. The lines list will then
contain a list of all lines.

The problem with your current callback is that its return value is
ignored by the FTP module that calls it.

regards
Steve
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[Matija Papec]

Re: ftplib callbacks

X-Ftn-To: Steve Holden

Steve Holden <steve@holdenwe b.com> wrote:[color=blue]
>The callback is called each time the FTP client softwrae has something
>to deal with. Try (untested):
>
>lines = []
>
>def myfilter(line):
> global lines
> lines.append(li ne)
>
>with the remainder of your code unchanged. The lines list will then
>contain a list of all lines.[/color]

Tnx, I did

def nlst2(self, *args):
cmd = 'LIST'
for arg in args:
cmd = cmd + (' ' + arg)
files = []
self.retrlines( cmd, files.append)
return files

and now I just need to parse it. :)
[color=blue]
>The problem with your current callback is that its return value is
>ignored by the FTP module that calls it.[/color]

Yes, unfortunately even "def retrlines" returns something uninteresting.



--
Matija