Determining if a filename is greater than X characters

[Alex Martelli]

hokiegal99 wrote:

> Thanks for the tips. I got it to work using this:
> 
> for root, dirs, files in os.walk(setpath):
> old_fname = files
> new_fname = old_fname[0][:27]
> print old_fname
> print new_fname

[note the lack of indentation due to your usage of tabs -- please use
spaces, not tabs, for Python code in messages you post to the net or send by
mail - many popular user-agents for news and mail, such as Microsoft
Outlook Express and KDE's KNode, won't display or process tabs in the
way you might expect them to].


> The problem with this approach is that it only gets the first filename
> in the directory. I tried doing "old_fname[:][:27]", but that doesn't do
> it. I need to learn more about lists.

Since files is a LIST of strings, you may loop (directly or with a
list-comprehension) to process all of its items, i.e., your loop
above becomes:

for root, dirs, files in os.walk(setpath):
    for old_fname in files:
        new_fname = old_fname[:27]
        print old_fname
        print new_fname


Alex