FTPLib isdir() or isfile()?

[Kruptein]

I'm fetching a list with all files/folders on a ftp-server,
I want to put a [F] before a folder, and leave files like they are,
but I can't find a way to check if it's a file or a dir...

I already tried:

from ftplib import FTP
import os
ftp = FTP(self.host)
listdir = self.ftp.nlst()
for i in listdir:
    if(self.ftp.sendcmd(os.path.isdir(bool(self.ftpdir + "/" + i)))):
          self.list_box_2.Append("[F] " + i)

But this ends in an error:

Traceback (most recent call last):
File "./DCM/dcm", line 714, in ftp_start
self.start_ftp()
File "./DCM/dcm", line 671, in start_ftp
self.ftp_show_dir()
File "./DCM/dcm", line 678, in ftp_show_dir
if(self.ftp.sendcmd(os.path.isdir(str(self.ftpdir + "/" + i)))):
File "/usr/lib/python2.6/ftplib.py", line 242, in sendcmd
self.putcmd(cmd)
File "/usr/lib/python2.6/ftplib.py", line 177, in putcmd
self.putline(line)
File "/usr/lib/python2.6/ftplib.py", line 170, in putline
line = line + CRLF
TypeError: unsupported operand type(s) for +: 'bool' and 'str'

[nezachem]

I'm fetching a list with all files/folders on a ftp-server,
I want to put a [F] before a folder, and leave files like they are,
but I can't find a way to check if it's a file or a dir...

I already tried:

from ftplib import FTP
import os
ftp = FTP(self.host)
listdir = self.ftp.nlst()
for i in listdir:
    if(self.ftp.sendcmd(os.path.isdir(bool(self.ftpdir + "/" + i)))):
          self.list_box_2.Append("[F] " + i)

But this ends in an error:

Of course.
You have to use ftp.dir instead of ftp.nlst, and massage the returned list (it will have the information you need and a lot more).

[Kruptein]

No...
Every FTP server has an other configuration, so it would be very messy to create a script to get what I want from the ftp.dir command
ftp.nlst works fine and gives me a list with all the files/dirs.
but I need something that when I give a name ftp will return what it is: folder or file.

Is this possible with the ftp.dir command if I have the filename?

(It would be handy if it was just for me, but it's a program I'm writing for a lot of people with different ftp servers.)

[Sunjay03]

This is my solution. It isn't pretty...but it works!

def isdir(ftp, name):
   try:
      ftp.cwd(name)
      ftp.cwd('..')
      return True
   except:
      return False