On 07/13/2010 10:56 AM, pyt...@bdurham.com wrote:
Any recommendations for a cross-platform module that creates a
directory object with not only file names, but file attributes as
well?
Use cases:
- Sort files by file size or date last modified
- Filter files by read-only status
I know I can use various standard library functions [1] to
construct such a class, but I'd rather avoid re-inventing the
wheel if at all possible. (I fear that this may be one of those
seemingly easy tasks that starts off simple and ends up taking a
lot more time to implement after real world refactoring).
I think it's sufficiently easy to create a custom solution that
there's not much value in trying to map file-metadata into a
wrapper object. For your examples:
f = os.path.getmtime
#f = os.path.getsize
sorted_by_mtime = sorted(os.listdir('.'), key=f)
or if you need a different location
sorted_by_mtime = sorted(
os.listdir(loc),
key=lambda fname: f(os.path.join(loc, fname))
)
And for your read-only status:
files = [fname for fname in os.listdir(loc)
if os.access(os.path.join(loc, fname), os.W_OK)
]
That doesn't mean somebody hasn't done it before, but given how
easy it is without a wrapper object, it's not something I'd go
out of my way to find.
-tkc
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