Small Images with PIL

image_smaller.py

from PIL import Image
import os
import subprocess
import sys

def smaller_images():
    if len(sys.argv) != 3:
        print "Usage: python image_smaller.py <Path> 0.X"
        return
    path = sys.argv[1]
    if not path.startswith("/"):
        path = os.path.join(os.getcwd(), path)
    try:
        rate = float(sys.argv[2])
    except ValueError:
        print "Usage: python image_smaller.py <Path> 0.X"
        return
    if not os.path.exists(path):
        print "Error: Invalid path: %s" % path
        return
    target_dir = os.path.join(os.getcwd(), "image_smaller_%.2f" % rate)
    if os.path.exists(target_dir):
        print "Error: Target directory exist (%s)" % target_dir
        return
    os.mkdir(target_dir)
    count = 1
    EXTS = ("png", "jpg", "jpeg", "bmp")
    file_list = [x for x in os.listdir(path) if x.split('.')[-1].lower() in EXTS]

    total = len(file_list)
    try:
        cols = int(subprocess.check_output(['tput', 'cols']).strip()) - 8
    except AttributeError:
        cols = 72
    width_rate = cols * 1.0 / total
    for f in file_list:
        print '\r',
        print '#' * int(width_rate * count),
        fmt_str = '{:%d.1%%}' % (cols - int(width_rate * count) + 6)
        percent_rate_str = fmt_str.format(count * 1.0 / total)
        print percent_rate_str,
        sys.stdout.flush()

        img = Image.open(os.path.join(path, f))
        new_img = img.resize((int(img.size[0] * rate), int(img.size[1] * rate)),
                         Image.ANTIALIAS)
        new_img.save(os.path.join(target_dir, f), quality=100)
        count += 1
    print "\nOK. Processed %d Images!" % count
    print "Saved at: %s" % target_dir

if __name__ == "__main__":
    smaller_images()