newbie wants to compile python list of filenames in selected directories
anthonyberet
nospam at me.invalid
Tue Feb 8 15:10:47 EST 2005
M.E.Farmer wrote:
> anthonyberet wrote:
>
>>Hi, I am new at Python, and very rusty at the one language I was good
>
>
>>at, which was BASIC.
>>
>>I want to write a script to compare filenames in chosen directories,
>
> on
>
>>windows machines. Ideally it would compose a list of strings of all
>
> the
>
>>filenames in the directories, and those directories would be chosable
>
> by
>
>>the user of the script.
>>
>>I am quite happy to do my own legwork on this , I realise it is
>
> simple
>
>>stuff, but can anyone point me in the right direction to start?
>>
>>Thanks
>
>
> Cool! I like your attitude ;)
> Others have given you a good start with os. In case you don't know os
> has a great many path manipulation methods. Always try to use them so
> you can insulate yourself from cross platform path nightmares.
> A few of the highlights are:
>
> ### split a path
> py> parts = os.path.split(r'c:\windows\media\ding.wav')
> py> print parts
> ('c:\\windows\\media', 'ding.wav')
>
> ### join a path and part and do it right on any platform
> py> path = os.path.join('c:\\windows\\media', 'ding.wav')
> 'c:\\windows\\media\\ding.wav'
>
> ### get basename of the file
> py> base = os.path.basename('c:\\windows\\media\\ding.wav')
> py> print base
> 'ding.wav'
>
> Plus many more, be sure to study the os module if you are doing any
> path manipulations.
>
> Ok and now for something sorta different( alright, I was really bored )
>
> . def glob_dir(dir):
> . """Return a list of *.py* (.py, .pyc, .pyo, .pyw)
> . files from a given directory.
> . """
> . import glob, os
> . # Get a list of files that match *.py*
> . GLOB_PATTERN = os.path.join(dir, "*.[p][y]*")
> . pathlist = glob.glob(GLOB_PATTERN)
> . return pathlist
> .
> . def list_dir(dir):
> . ''' Another way to filter a dir '''
> . import os
> . pathlist = os.listdir(dir)
> . # Now filter out all but py and pyw
> . filterlist = [x for x in pathlist
> . if x.endswith('.py')
> . or x.endswith('.pyw')]
> . return filterlist
> hth,
Thanks to everyone who responded - I feel on my way now, just being able
to tap 'os python' and 'lisdir python' into Google has netted me plenty
of reading material - but I would have taken a long time to find that
out without your tips!
I will surely come back, but not until I get I get stuck :)
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