ftp: get list of files

[eels]

Hello,

I want to get a listing of my files at web server with ftp. I wantn 't
download the files.
With yyy = ftp.retrlines('LIST') I get this listing at stdout, but I
need this information at variable yyy.
How can I resolve this problem?

Thank's for your hints, Thomas

 

[Lawrence Oluyede]

With yyy = ftp.retrlines('LIST') I get this listing at stdout, but I
need this information at variable yyy.
How can I resolve this problem?

As written in the doc retrlines has an optional parameter (a callback function)
called on each line retrieved, so you can do something like this:

from ftplib import FTP

def writeline(data):
fd.write(data + "\n")

f = FTP('ftp.kernel.org')
f.login()

f.cwd('/pub/linux/kernel')
fd = open('README', 'wt')
f.retrlines('RETR README', writeline)
fd.close()
f.quit()

 

[Fredrik Lundh]

I want to get a listing of my files at web server with ftp. I wantn 't
download the files.
With yyy = ftp.retrlines('LIST') I get this listing at stdout, but I
need this information at variable yyy.
How can I resolve this problem?

as mentioned in the documentation, you need to provide a callback if
you want to collect the data from a retr operation.

yyy = []
ftp.retrlines("LIST", yyy.append)

should do the trick.

(also see the dir and nlst methods)

</F>

 

[eels]

Hello Fredrik,

thank's for your quick help.
Greetings Eels

I want to get a listing of my files at web server with ftp. I wantn 't
download the files.
With yyy = ftp.retrlines('LIST') I get this listing at stdout, but I
need this information at variable yyy.
How can I resolve this problem?

as mentioned in the documentation, you need to provide a callback if
you want to collect the data from a retr operation.

yyy = []
ftp.retrlines("LIST", yyy.append)

should do the trick.

(also see the dir and nlst methods)

</F>

 

[Paul Watson]

As written in the doc retrlines has an optional parameter (a callback function)
called on each line retrieved, so you can do something like this:

from ftplib import FTP

def writeline(data):
fd.write(data + "\n")

f = FTP('ftp.kernel.org')
f.login()

f.cwd('/pub/linux/kernel')
fd = open('README', 'wt')
f.retrlines('RETR README', writeline)
fd.close()
f.quit()

How about a little more portability?

def writeline(data):
fd.write(data + os.linesep)