added new zipscale variant which uses composition instead of inhiterance

python_3_oop/chapter05/zipscale_comp.py

@@ -0,0 +1,19 @@
+from zipprocessor import ZipProcessorComp
+import sys
+import os
+from pygame import image
+from pygame.transform import scale
+
+
+class ZipScale():
+
+    def process(self, zipprocessor):
+        """Scale each image in the directory to 640x480"""
+        for filename in os.listdir(zipprocessor.temp_directory):
+            im = image.load(zipprocessor._full_filename(filename))
+            scaled = scale(im, (640, 480))
+            image.save(scaled, zipprocessor._full_filename(filename))
+
+
+if __name__ == "__main__":
+    ZipProcessorComp(sys.argv[1], ZipScale()).process_zip()