Re: Unable to write output from os.path.walk to a file.

[Jeff McNeil]

Your args are fine, that's just the way os.path.walk works. If you
just need the absolute pathname of a directory when given a relative
path, you can always use os.path.abspath, too.

A couple more examples that may help, using os.walk:

>>for i in os.walk('/var/log'):

.... for j in i[1] + i[2]:
.... print os.path.join(i[0], j)
....
/var/log/apache2
/var/log/cups
/var/log/fax
/var/log/krb5kdc
/var/log/ppp
/var/log/sa
/var/log/samba

Or, in the event that a relative path was used:

>>for i in os.walk(os.path.abspath('../../var/log')):

.... for j in i[1] + i[2]:
.... print os.path.join(i[0], j)
....
/var/log/apache2
/var/log/cups
/var/log/fax
/var/log/krb5kdc
/var/log/ppp
/var/log/sa
/var/log/samba


On Wed, Jun 4, 2008 at 6:07 PM, Paul Lemelle <pd*****@yahoo.comwrote:

Jeff,

Thanks for your reply. I would like to like the absolute path of a directory. I thought that os.listdir just returns the nam itself in a data list.

I noticed that none was being return in my example. Do you think that I have the arguments misplaced?

Thanks,
Paul

--- On Wed, 6/4/08, Jeff McNeil <je**@jmcneil.netwrote:

>From: Jeff McNeil <je**@jmcneil.net>
Subject: Re: Unable to write output from os.path.walk to a file.
To: pd*****@yahoo.com
Cc: py*********@python.org
Date: Wednesday, June 4, 2008, 3:26 PM
What exactly are you trying to accomplish? If you're
just looking for
the contents of a directory, it would be much easier to
simply call
os.listdir(dirinput) as that will return a list of strings
that
represent the entries in dirinput.

As it stands, 'os.path.walk' will return None in
your example, thus
the reason f.writelines is failing, the error says
something about a
required iterable, no?

You ought to look at os.walk anyways, as I believe it is
the preferred
approach when walking a directory hierarchy. It's a
generator that
will yield a tuple that contains (dirname, subdirectories,
filenames).
It seems that is what you're looking for?

Thanks,

Jeff


On Wed, Jun 4, 2008 at 2:54 PM, Paul Lemelle
<pd*****@yahoo.comwrote:

I Am trying to output the os.path.walk to a file, but

the writelines method complains....

>
Below is the code, any helpful suggestions would be

appreciated.

>
def visit(arg, dirnames, names):
print dirnames


dirinput = raw_input("Enter directory to read:

")

>
listdir = os.path.walk (dirinput, visit, None)

f = open("walktxt", "w")

f.writelines(listdir)

f.close()

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