File size is zero

Question

I'm trying to write a simple script that looks at various files and manipulates them depending on file size, but I've tried both :

os.stat(path + fname).st_size

and

os.path.getsize(path + fname)

but both return a result of '0'. I'm running Kubuntu but the file system is NTFS formatted, could this be the problem, or does anyone have any reason why this may be happening?

** EDIT **

Somehow all my files have been emptied of all their data. Please ignore this, the filesize is being reported correct.

It's probably related to the filesystem. Try it on an ext partition to see if it works properly there. — Polynomial, Feb 06 '12 at 12:05
Pardon me for asking the obvious, but does the file in question actually have non-zero size? — NPE, Feb 06 '12 at 12:06
If you display the size of the file in the shell or using a file manager, does it show the correct size? — sepp2k, Feb 06 '12 at 12:10
Appreciate everyones help - somehow all my files go zero sized and my file manager hadn't update — Martyn, Feb 06 '12 at 12:14
I am seeing the same behavior in Python 2.7.11 on OS X. I believe it is related to Apple's disk format — macguru2000, Oct 04 '16 at 23:58

score 1 · Answer 1 · edited May 23 '17 at 12:15

1

Don't build filenames as if they're plain strings. Use os.path helper functions. You could be missing a separator, or have double separators, or something.

Also try "validating" (or just plain inspecting) the filename, perhaps there are embedded NUL bytes that are causing confusion. See this comment to a different question.

edited May 23 '17 at 12:15

Community

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answered Feb 06 '12 at 12:04

unwind

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That's good advise, but if the filename was the problem, wouldn't stat fail instead of returning 0? – Niklas B. Feb 06 '12 at 12:06
same behaviour with `os.path.getsize(os.path.join(path, fname))` – Martyn Feb 06 '12 at 12:06

File size is zero

1 Answers1