directory listing

[Michael Konrad]

Re: directory listing


This is what I decided on for a solution. I haven't tested it
cross-platform yet.

import os

def dirListing(dire ctory='/Users/mkonrad'):
"""Returns a list of directories."""
#variables
dirs = [] #list of directories

#list of directories and files
listing = os.listdir(dire ctory)

#get just the directories
for x in listing:
if os.path.isdir(d irectory+os.sep +x):
dirs.append(x)

return dirs

Fredrik Lundh wrote:[color=blue]
> "Shi Mu" wrote:
>[color=green]
>> print buildList() gets lots of stuffs from my temp directory(there do
>> exist lots of files).
>> But why "print x' has nothing?[/color]
>
> C:\>more script.py
> import os
>
> def buildList( directory='c:\T EMP' ):
> dirs = [ ]
> listing = os.listdir(dire ctory)
> for x in listing:
> x = os.path.join(di rectory, x)
> print x
> if os.path.isdir(x ):
> dirs.append(x)
> return dirs
>
> print buildList()
>
> C:\>dir temp
> ...
>
> 2005-11-12 00:00 <KAT> .
> 2005-11-12 00:00 <KAT> ..
> 2005-11-12 00:00 20 bacon.dat
> 2005-11-12 00:00 <KAT> egg
> 2005-11-12 00:00 20 spam.txt
> 2 fil(er) 40 byte
> 3 katalog(er) 9 818 021 888 byte ledigt
>
> C:\>python script.py
> c:\TEMP\bacon.d at
> c:\TEMP\egg
> c:\TEMP\spam.tx t
> ['c:\\TEMP\\egg']
>
> </F>
>
>
>[/color]

[Michael Konrad]

Re: directory listing


This is what I decided on for a solution. I haven't tested it
cross-platform yet.

import os

def dirListing(dire ctory='/Users/mkonrad'):
"""Returns a list of directories."""
#variables
dirs = [] #list of directories

#list of directories and files
listing = os.listdir(dire ctory)

#get just the directories
for x in listing:
if os.path.isdir(d irectory+os.sep +x):
dirs.append(x)

return dirs

Fredrik Lundh wrote:[color=blue]
> "Shi Mu" wrote:
>[color=green]
>> print buildList() gets lots of stuffs from my temp directory(there do
>> exist lots of files).
>> But why "print x' has nothing?[/color]
>
> C:\>more script.py
> import os
>
> def buildList( directory='c:\T EMP' ):
> dirs = [ ]
> listing = os.listdir(dire ctory)
> for x in listing:
> x = os.path.join(di rectory, x)
> print x
> if os.path.isdir(x ):
> dirs.append(x)
> return dirs
>
> print buildList()
>
> C:\>dir temp
> ...
>
> 2005-11-12 00:00 <KAT> .
> 2005-11-12 00:00 <KAT> ..
> 2005-11-12 00:00 20 bacon.dat
> 2005-11-12 00:00 <KAT> egg
> 2005-11-12 00:00 20 spam.txt
> 2 fil(er) 40 byte
> 3 katalog(er) 9 818 021 888 byte ledigt
>
> C:\>python script.py
> c:\TEMP\bacon.d at
> c:\TEMP\egg
> c:\TEMP\spam.tx t
> ['c:\\TEMP\\egg']
>
> </F>
>
>
>[/color]

[Michael Konrad]

Re: directory listing

Sorry about that, I guess send was working.

Michael Konrad wrote:[color=blue]
>
> This is what I decided on for a solution. I haven't tested it
> cross-platform yet.
>
> import os
>
> def dirListing(dire ctory='/Users/mkonrad'):
> """Returns a list of directories."""
> #variables
> dirs = [] #list of directories
>
> #list of directories and files
> listing = os.listdir(dire ctory)
>
> #get just the directories
> for x in listing:
> if os.path.isdir(d irectory+os.sep +x):
> dirs.append(x)
>
> return dirs
>
> Fredrik Lundh wrote:[color=green]
>> "Shi Mu" wrote:
>>[color=darkred]
>>> print buildList() gets lots of stuffs from my temp directory(there do
>>> exist lots of files).
>>> But why "print x' has nothing?[/color]
>>
>> C:\>more script.py
>> import os
>>
>> def buildList( directory='c:\T EMP' ):
>> dirs = [ ]
>> listing = os.listdir(dire ctory)
>> for x in listing:
>> x = os.path.join(di rectory, x)
>> print x
>> if os.path.isdir(x ):
>> dirs.append(x)
>> return dirs
>>
>> print buildList()
>>
>> C:\>dir temp
>> ...
>>
>> 2005-11-12 00:00 <KAT> .
>> 2005-11-12 00:00 <KAT> ..
>> 2005-11-12 00:00 20 bacon.dat
>> 2005-11-12 00:00 <KAT> egg
>> 2005-11-12 00:00 20 spam.txt
>> 2 fil(er) 40 byte
>> 3 katalog(er) 9 818 021 888 byte ledigt
>>
>> C:\>python script.py
>> c:\TEMP\bacon.d at
>> c:\TEMP\egg
>> c:\TEMP\spam.tx t
>> ['c:\\TEMP\\egg']
>>
>> </F>
>>
>>
>>[/color]
>[/color]

[jay.dow@gmail.com]

Re: directory listing

Shi Mu:

Before all you were doing was defining a function with:
import os

def buildList( directory='c:\T EMP' ):
dirs = [ ]
listing = os.listdir(dire ctory)
for x in listing:
x = os.path.join(di rectory, x)
print x
if os.path.isdir(x ):
dirs.append(x)
return dirs

when you python this file, it does not execute the function, it only
defines it.
Later Lundh told you to add:
print buildList()

to the end of the file. Not only does this execute buildList() but it
also prints out the list "dirs" that buildList returns. So the first
time it wasn't that "print x" wasn't printing anything, it was only
that you weren't executing the function buildList(). If, at the end of
the file, you put buildList() you will only see output values
corresponding to the print x statement

[Shi Mu]

Re: directory listing

thanks a lot!

On 11/11/05, Michael Konrad <mkonrad@syr.ed u> wrote:[color=blue]
>
> This is what I decided on for a solution. I haven't tested it
> cross-platform yet.
>
> import os
>
> def dirListing(dire ctory='/Users/mkonrad'):
> """Returns a list of directories."""
> #variables
> dirs = [] #list of directories
>
> #list of directories and files
> listing = os.listdir(dire ctory)
>
> #get just the directories
> for x in listing:
> if os.path.isdir(d irectory+os.sep +x):
> dirs.append(x)
>
> return dirs
>
> Fredrik Lundh wrote:[color=green]
> > "Shi Mu" wrote:
> >[color=darkred]
> >> print buildList() gets lots of stuffs from my temp directory(there do
> >> exist lots of files).
> >> But why "print x' has nothing?[/color]
> >
> > C:\>more script.py
> > import os
> >
> > def buildList( directory='c:\T EMP' ):
> > dirs = [ ]
> > listing = os.listdir(dire ctory)
> > for x in listing:
> > x = os.path.join(di rectory, x)
> > print x
> > if os.path.isdir(x ):
> > dirs.append(x)
> > return dirs
> >
> > print buildList()
> >
> > C:\>dir temp
> > ...
> >
> > 2005-11-12 00:00 <KAT> .
> > 2005-11-12 00:00 <KAT> ..
> > 2005-11-12 00:00 20 bacon.dat
> > 2005-11-12 00:00 <KAT> egg
> > 2005-11-12 00:00 20 spam.txt
> > 2 fil(er) 40 byte
> > 3 katalog(er) 9 818 021 888 byte ledigt
> >
> > C:\>python script.py
> > c:\TEMP\bacon.d at
> > c:\TEMP\egg
> > c:\TEMP\spam.tx t
> > ['c:\\TEMP\\egg']
> >
> > </F>
> >
> >
> >[/color]
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>[/color]