DragonFly kernel List (threaded) for 2008-02
Rahul Siddharthan wrote:
> Actually you only want .el files that lack .elc files. So it would be
> [x for x in listdir(".") if x[-3:]==".el" and not exists(x + "c")]
> But the question was to find such all such files in a directory tree,
> not just in the current directory.
No, the original question mentioned only a single directory.
Someone lese then asked about a directory tree.
> I don't know whether there is a
> python builtin for recursive directory listings,
Yes: walk(). It's in module os, too.
> (also, exists should be path.exists or os.path.exists depending on how
> os was imported.
Yes, I assumed "from os import *" etc.
> But it seems wasteful to use it since we only need
> the directory listing. I'd store the directory listing in a separate
> variable and check for existence in that.)
That's also true. :-)
dir = listdir(".")
[x for x in dir if x.endswith(".el") and x + "c" not in dir]
> I did say I'd do it in python, and list comprehensions are the number
> two reason why I like python. The overall clean syntax is the number
> one reason.
I agree 100%.
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- Re: Globbing
- From: Oliver Fromme <email@example.com>
- Re: Globbing
- From: Rahul Siddharthan <firstname.lastname@example.org>