[Tutor] identifying graphics attributes

[Danny Yoo]

On Mon, 25 Feb 2002, Erik Price wrote:

> inconvenient.  It would be nice if there were a program that could do 
> the work of identifying the file's information (basic attributes like 
> width and height and resolution by crawling through a directory and 
> extracting the relevant data from the file.

Hi Erik,


Yes, we can do this with the Python Imaging Library (PIL):

    http://www.pythonware.com/products/pil/

PIL is well suited for image manipulations.  If we use PIL, the problem is
not bad at all --- I think it would involve doing something like:

###
## Warning, warning, untested code
for file in files:
    im = Image.open(file)
    print "%s has dimensions %s and is of size %s bytes" % \
              (file, im.size, os.path.getsize(file))
###


> of detail involved is not very great (the important parts are
> literally the width, height, file size, and filename), this doesn't
> seem like a completely unapproachable task.

I think this should be a great first Python script.  *grin* By the way, if
you'd like more details on os.path, you can look at:

    http://www.python.org/doc/lib/module-os.path.html


Another interesting module would be the 'glob' module:

    http://www.python.org/doc/lib/module-glob.html

which helps us pull all the files in a given directory.



Hope this helps!