>
> > im trying to delete all text files from an ftp directory. is there a way to
> > delete multiple files of the same extension?
>
> >
>
> > I came up with the following code below which works but I have to append
> > the string because ftp.nlst returns:
>
> >
>
> > "-rwx------ 1 user group 0 Feb 04 15:57 New Text Document.txt"
>
> >
>
> > but then when I try to delete it that long file name which includes the
> > date doesnt exist - the files name is "new text document.txt" not
> > "-rwx------ 1 user group 0 Feb 04 15:57 New Text Document.txt"
>
> >
>
> > so anyway I stripped off the the beginning keeping the last 21 characters
> > and it worked great - this should work being that I know all my text files
> > names are the same length in characters - but it seems like there should be
> > a better more bullet proof way to do this?
>
> >
>
> > [code]import os
>
> > import system
>
> > from ftplib import FTP
>
> >
>
> > ftp = FTP('127.0.0.1')
>
> > ftp.login('')
>
> >
>
> > directory = 'test'
>
> > ftp.cwd(directory)
>
> >
>
> > files = ftp.nlst()
>
> >
>
> > for file in files:
>
> > if file.find(".txt") != -1:
>
> > file = (file [-21:])
>
> > ftp.delete(file)
>
> >
>
> > ftp.close()[/code]
>
> >
>
> > any ideas on this? thank you.
>
> >
>
> Firstly, instead of:
>
>
>
> file.find(".txt") != -1
>
>
>
> use:
>
>
>
> file.endswith(".txt")
>
>
>
> It's clearer (and it's true only if the ".txt" is at the end!)
>
>
>
> Secondly, your code assumes that the filename is exactly 21 characters.
>
> It looks like the strings returned by ftp.nlst() consist of 9 fields
>
> separated by whitespace, with the last field being the filename,
>
> which can also contain spaces. That being so, you can split the strings
>
> like this:
>
>
>
> fields = file.split(None, 9)
>
>
>
> That'll make a maximum of 9 splits on any whitespace, for example:
>
>
>
> >>> "-rwx------ 1 user group 0 Feb 04 15:57 New Text
>
> Document.txt".split(None, 9)
>
> ['-rwx------', '1', 'user', 'group', '0', 'Feb', '04', '15:57', 'New',
>
> 'Text Document.txt']
>
>
>
> Therefore:
>
>
>
> for entry in ftp.nlst():
>
> if entry.endswith(".txt"):
>
> filename = entry.split(None, 9)[-1]
>
> ftp.delete(filename)
On Tuesday, February 5, 2013 10:45:02 AM UTC-8, MRAB wrote:
> On 2013-02-05 17:29, chris.an...@gmail.com wrote:
>
> > im trying to delete all text files from an ftp directory. is there a way to
> > delete multiple files of the same extension?
>
> >
>
> > I came up with the following code below which works but I have to append
> > the string because ftp.nlst returns:
>
> >
>
> > "-rwx------ 1 user group 0 Feb 04 15:57 New Text Document.txt"
>
> >
>
> > but then when I try to delete it that long file name which includes the
> > date doesnt exist - the files name is "new text document.txt" not
> > "-rwx------ 1 user group 0 Feb 04 15:57 New Text Document.txt"
>
> >
>
> > so anyway I stripped off the the beginning keeping the last 21 characters
> > and it worked great - this should work being that I know all my text files
> > names are the same length in characters - but it seems like there should be
> > a better more bullet proof way to do this?
>
> >
>
> > [code]import os
>
> > import system
>
> > from ftplib import FTP
>
> >
>
> > ftp = FTP('127.0.0.1')
>
> > ftp.login('')
>
> >
>
> > directory = 'test'
>
> > ftp.cwd(directory)
>
> >
>
> > files = ftp.nlst()
>
> >
>
> > for file in files:
>
> > if file.find(".txt") != -1:
>
> > file = (file [-21:])
>
> > ftp.delete(file)
>
> >
>
> > ftp.close()[/code]
>
> >
>
> > any ideas on this? thank you.
>
> >
>
> Firstly, instead of:
>
>
>
> file.find(".txt") != -1
>
>
>
> use:
>
>
>
> file.endswith(".txt")
>
>
>
> It's clearer (and it's true only if the ".txt" is at the end!)
>
>
>
> Secondly, your code assumes that the filename is exactly 21 characters.
>
> It looks like the strings returned by ftp.nlst() consist of 9 fields
>
> separated by whitespace, with the last field being the filename,
>
> which can also contain spaces. That being so, you can split the strings
>
> like this:
>
>
>
> fields = file.split(None, 9)
>
>
>
> That'll make a maximum of 9 splits on any whitespace, for example:
>
>
>
> >>> "-rwx------ 1 user group 0 Feb 04 15:57 New Text
>
> Document.txt".split(None, 9)
>
> ['-rwx------', '1', 'user', 'group', '0', 'Feb', '04', '15:57', 'New',
>
> 'Text Document.txt']
>
>
>
> Therefore:
>
>
>
> for entry in ftp.nlst():
>
> if entry.endswith(".txt"):
>
> filename = entry.split(None, 9)[-1]
>
> ftp.delete(filename)
wow, thank you very much thats a huge help.
Chris
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