Posts Tagged ‘python’

Because sometimes, you need some thumbnails

Sunday, March 20th, 2011

So let’s say you’ve got a folder with a load of images, and you want to display them as thumbnails.
One thing you certainly DON’T want to do is just load up the images and shrink them in the HTML – assuming that the images are large, this is a bandwidth hog, and an annoying experience for the user. Ideally, you’d want to use actual thumbnails – they’re smaller in terms of both filesize and dimensions.

I hacked together a little script to do this for me:

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#!/usr/local/bin/python2.6
 
import Image
import os
 
PICDIR = './pics'
THUMBDIR = '%s/thumbs' % PICDIR
ratio = 0.8
THUMB_W = 125
THUMB_H = int(ratio * THUMB_W)
THUMBSIZE = (THUMB_W, THUMB_H)
 
#1 - delete everything under /thumbs
all_thumbs = os.listdir(THUMBDIR)
remove_count = 0
for thumb in all_thumbs:
    thumbpath = '%s/%s' % (THUMBDIR, thumb)
    os.remove(thumbpath)
    print 'removed %s' % thumbpath
    remove_count += 1
print 'Removed %d thumbnails' % remove_count
 
#2 - for each image in the pic directory, generate a new thumbnail
all_files = os.listdir(PICDIR)
jpgs = [file for file in all_files if file.endswith('.jpg')]
 
for jpg in jpgs:
    original = Image.open('%s/%s' % (PICDIR, jpg))
    thumb = original.resize(THUMBSIZE, Image.ANTIALIAS)
    thumbpath = "%s/%s" % (THUMBDIR, jpg)
    thumb.save(thumbpath)
    print "wrote %s" % thumbpath

now whenever I rsync image files from my local machine to my webserver, I can just run the script, et voila!: thumbnails ahoy!

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Posted in programming | No Comments »

Moving stuff between laptops

Saturday, March 5th, 2011

I bought a new macbook pro recently and almost immediately installed Ubuntu 10.10 on it. Was then left with the issue of moving over my fairly small, but partially substantive mp3 collection… turned out to be fairly simple!

on the source machine, in the appropriate directory:

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python -m SimpleHTTPServer

and then on the destination machine:

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wget -r veronica:8000

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Posted in geek, linux | 1 Comment »