learning-by-doing/python_3_oop/chapter05/zipscale.py

from zipprocessor import ZipProcessor
import sys
import os
from pygame import image
from pygame.transform import scale


class ZipScale(ZipProcessor):

    def process_files(self):
        '''Scale each image in the directory to 640x480'''
        for filename in os.listdir(self.temp_directory):
            im = image.load(self._full_filename(filename))
            scaled = scale(im, (640, 480))
            image.save(scaled, self._full_filename(filename))

if __name__ == "__main__":
    ZipScale(*sys.argv[1:2]).process_zip()