Rif: Re: How To Do It Faster?!?

[andrea.gavana]

Hello Lazslo & NG,

You can use the stat module to get attributes like last modification
date, uid, gid etc. The documentation of the stat module has a nice
example. Probably it will be faster because you are running an external
program (well, "dir" may be resident but still the OS needs to create a
new shell and interpret the parameters on every invocation).

Unfortunately, on Windows it does not seem to work very well:

0

I don't think my user ID is 0...

While with the OS dos command I get:

userid: \\ENI\ag12905

Am I missing something on the stat module? I'm running Python 2.3.4.

Thanks a lot.

Andrea.

 

[Diez B. Roggisch]

Am I missing something on the stat module? I'm running Python 2.3.4.

Yes, you are missing that this is more unix-like. It seems to work in a
certain degree on windows - but as the user-model between unix and windows
is considerably different, you found a not-so-well working part.

I don't think that your code could be much faster at all - the limits are
not so much within python than windows itself. The only thing I can think
of is to use python-win32 to make the calls that dir with your various
options does itself. That would maybe save you the additional overhead of
creating a string representation (done by dir) and parsing that - but I
doubt the performance gain justifies the means.

 

[Peter Hansen]

Unfortunately, on Windows it does not seem to work very well:
0

I don't think my user ID is 0...

While with the OS dos command I get:

userid: \\ENI\ag12905

I would recommend using the pywin32 support that almost
certainly exists for getting the owner of a file.

On the other hand, I'm not familiar with the Windows
API in question, but either somebody else will point
you to it, or a search on msdn.com would find it for
you.

-Peter