[Tutor] Using os.path.walk across platforms (fwd)
Randy Waters
rwaters@csmbid.com
Thu, 9 Aug 2001 12:58:14 -0500
Thanks a lot for the code. It works very well and I will put it in my little
Python bag of tricks for future reference! However, I finally did get the
results I wanted from ftplib .retrlines after playing around with the output
from 'LIST'. This snippet of code lets me detect whether my NT files are
directories or not so that I can do a chdir via ftplib and copy the files in
subdirectories. Thanks again for your help, Israel and Daniel.
--------
#!/usr/bin/python
import os
from ftplib import FTP
session = FTP()
session.connect('someserver.somedomain.com', port=2188)
session.login()
rootList = []
dirList = []
session.retrlines('LIST', rootList.append)
for i in range (len(rootList)):
if rootList[i][0] == 'd':
dirList.append(rootList[i])
for j in range (len(dirList)):
print dirList[j]
session.close()
-----Original Message-----
From: Israel Evans [mailto:israel@lith.com]
Sent: Wednesday, August 08, 2001 12:50 PM
To: 'Daniel Coughlin'; rwaters@csmbid.com
Cc: tutor@python.org
Subject: RE: [Tutor] Using os.path.walk across platforms (fwd)
whoops. It think I just sent a blank email out. sorry, trigger finger
overload...
I don't know if this will work on the nt to unix, I haven't tested it
because I don't have access to either one right yet, but I just re3cently
did something that used all of the generic os stuff to print out a list of
directories and files. This could be tweaked to do the same thing for you,
I think..
Anyway here it is... let me know If I'm on crack or anything...
-------------------------------------------------
#! e:\ehold\python21
import os, os.path
def dircont(rootdir=os.getcwd()):
"""Types out a list of directories and files in specified directory
"""
dirlist = []
filelist = []
for item in os.listdir(rootdir):
itempath = os.path.join(rootdir, item)
if os.path.isdir(itempath):
dirlist.append(item)
if os.path.isfile(itempath):
filelist.append(item)
print 'Root Directory: ', rootdir
print '\nFiles:'
for item in filelist:
print '\t',item
print '\nDirectories:'
for item in dirlist:
print '\t',item
if __name__ == '__main__':
import os, os.path
rootdir = raw_input('directory to search:>')
dircont(rootdir)
raw_input('press any key to end')
----------------------------------------------------------
-----Original Message-----
From: Daniel Coughlin [mailto:kauphlyn@speakeasy.org]
Sent: Tuesday, August 07, 2001 7:05 PM
To: rwaters@csmbid.com
Cc: tutor@python.org
Subject: Re: [Tutor] Using os.path.walk across platforms (fwd)
Hello,
I wrote a function that might do the trick for you. I am not familiar enough
with the os.path.walk function to know exactly what you are wanting, but I
added a new function and rewrote a couple of lines in your script, which
returns a list of all the directories in the present working directory. This
will
work for a script running on unix connecting to an NT filesystem (at least
it worked on mine ;-) . It did not work going from NT to Unix. You might
need to tweak the regular expression to get it exact.
I am sure this can be improved upon however.
#!/usr/bin/python
import os, string, re
from ftplib import FTP
def FilterDirectories(listing):
templist = []
dirlist = []
for item in listing:
if item[0] == 'd':
templist.append(re.split(':',item))
for item in templist:
dirlist.append(string.strip(re.sub('\d*','',item[1])))
for item in dirlist:
print item + ' is a directory..'
return dirlist
def GetFiles():
listings = [] #going to be a list of retrlines
session = FTP()
session.connect('myhost', port=21)
session.login(user=USERNAME, passwd='*****')
#os.path.walk(session.retrlines('LIST'),TheList,None)
session.cwd('Music') # delete this line
session.retrlines('LIST', listings.append)
FilterDirectories(listings)
session.close()
GetFiles()
-----------------------------------------------
The output on my system is :
Bell and Sebastian is a directory..
cocteau twins is a directory..
rachels is a directory..
Radiohead is a directory..
Sly & The Family Stone is a directory..
Sonic Youth is a directory..
Talking Heads is a directory..
(These are all, in fact, directories!)
Then I suppose you could use the dirlist to loop through each of the
directories using chdir.
Hope this helps.
Daniel
PS
Hooray for Danny Yoo!!!
>
>---------- Forwarded message ----------
>Date: Tue, 07 Aug 2001 14:17:34 -0500
>From: Randy Waters <rwaters@csmbid.com>
>To: "tutor@python.org" <tutor@python.org>
>Subject: [Tutor] Using os.path.walk across platforms
>
>Hello. I have an interesting little challenge. I need to copy files from
>an NT server to multiple Linux servers. The Python script needs to
>execute on a UNIX server. I am using ftplib and os.path.
>
>My problem is that the standard 'LIST' in (ftplib) retrlines needs to be
>captured to a list so that I can check to see if a entry is a directory
>or not. If I were executing only on UNIX/Linux I could use os.path.walk
>without a problem, but I am trying to "walk" down an NT path from UNIX.
>
>This script:
>
>#!/usr/bin/python
>
>import os, string
>from ftplib import FTP
>
>def TheList(arg, dirname, names):
> for name in names:
> print os.path.join(dirname, name)
> if os.path.isdir(name):
> print name + ' is a directory...'
>
>def GetFiles():
> session = FTP()
> session.connect('myserver.domain.com', port=8282)
> session.login()
> os.path.walk(session.retrlines('LIST'), TheList, None)
> session.close()
> return
>
>GetFiles()
>-------------------
>Returns this type of information:
>
>dr-xr-xr-x 1 owner group 0 Dec 7 2000 Co pack
>projects
>dr-xr-xr-x 1 owner group 0 May 29 14:52 COA
>dr-xr-xr-x 1 owner group 0 Aug 2 8:45 HANDLING
>-r-xr-xr-x 1 owner group 12800 Nov 4 1996 INFRZPR2.DOC
>
>-------------------
>
>If I could test the 1st position for 'd' then I would know that I have
>to chdir and read down the tree. Using os.path.isdir does not work
>probably because I am running my script on a UNIX server logged into an
>NT server.
>
>If anyone has any ideas I would appreciate it. Thank you and what a
>great language!
>
>_______________________________________________
>Tutor maillist - Tutor@python.org
>http://mail.python.org/mailman/listinfo/tutor
>
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp
_______________________________________________
Tutor maillist - Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor