[Tutor] iterating through a directory

[richard kappler]

Albert-Jan, thanks for the response. shutil.copyfile does seem to be one of
the tools I need to make the copying, renaming the copy and saving it
elsewhere in one line instead of three or more.

Still not sure how to efficiently get the script to keep moving to the next
file in the directory though, in other words, for each iteration in the
loop, I want it to fetch, rename and send/save the next image in line. Hope
that brings better understanding.

Thanks for the tip!

regards, Richard

On Wed, Sep 9, 2015 at 9:46 AM, Albert-Jan Roskam <sjeik_appie at hotmail.com>
wrote:

> > Date: Wed, 9 Sep 2015 09:32:34 -0400
> > From: richkappler at gmail.com
> > To: tutor at python.org
> > Subject: [Tutor] iterating through a directory
>
> >
> > Yes, many questions today. I'm working on a data feed script that feeds
> > 'events' into our test environment. In production, we monitor a camera
> that
> > captures an image as product passes by, gathers information such as
> > barcodes and package ID from the image, and then sends out the data as a
> > line of xml to one place for further processing and sends the image to
> > another place for storage. Here is where our software takes over,
> receiving
> > the xml data and images from vendor equipment. Our software then
> processes
> > the xml data and allows retrieval of specific images associated with each
> > line of xml data. Our test environment must simulate the feed from the
> > vendor equipment, so I'm writing a script that feeds the xml from an
> actual
> > log to one place for processing, and pulls images from a pool of 20,
> which
> > we recycle, to associate with each event and sends them to another dir
> for
> > saving and searching.
> >
> > As my script iterates through each line of xml data (discussed yesterday)
> > to simulate the feed from the vendor camera equipment, it parses ID
> > information about the event then sends the line of data on. As it does
> so,
> > it needs to pull the next image in line from the image pool directory,
> > rename it, send it to a different directory for saving. I'm pretty solid
> on
> > all of this except iterating through the image pool. My idea is to just
> > keep looping through the image pool, as each line of xmldata is parsed,
> the
> > next image in line gets pulled out, renamed with the identifying
> > information from the xml data, and both are sent on to different places.
> >
> > I only have one idea for doing this iterating through the image pool, and
> > frankly I think the idea is pretty weak. The only thing I can come up
> with
> > is to change the name of each image in the pool from something
> > like 0219PS01CT1_20111129_000004_00044979.jpg to 1.jpg, 2.jpg, 3.jpg
> etc.,
> > then doing something like:
> >
> > i = 0
> >
> > here begins my for line in file loop:
> > if i == 20:
> > i = 1
> > else:
> > i += 1
> > do stuff with the xml file including get ID info
> > rename i.jpg to IDinfo.jpg
> > send it all on
> >
> > That seems pretty barbaric, any thoughts on where to look for better
> ideas?
> > I'm presuming there are modules out there that I am unaware of or
> > capabilities I am unaware of in modules I do know a little about that I
> am
> > missing.
>
> I do not really understand what you intend to do, but the following
> modules might come in handy
> -os  (os.rename, os.listdir)
> -glob (glob.iglob or glob.glob)
> -shutil (shutil.copy)
>
>
>
>


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