python编程快速上手之第15章实践项目参考答案(17.7.2)
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#! python3 # Import modules and write comments to describe this program. import zipfile, os from PIL import Image from PIL import ImageFile #os.chdir(‘D:\\My Documents\\‘) ImageFile.LOAD_TRUNCATED_IMAGES = True for foldername, subfolders, filenames in os.walk(‘D:\\My Documents\\‘): numPhotoFiles = 0 numNonPhotoFiles = 0 for filename in filenames: # Check if file extension isn‘t .png or .jpg. if not (filename.endswith(‘.png‘) or filename.endswith(‘.jpg‘) or filename.endswith(‘.PNG‘) or filename.endswith(‘.JPG‘) or filename.endswith(‘.gif‘)or filename.endswith(‘.GIF‘)): numNonPhotoFiles += 1 continue # skip to next filename # Open image file using Pillow. os.chdir(foldername) try: im = Image.open(filename) im = im.convert(‘RGB‘) width, height = im.size except: continue # Check if width & height are larger than 500. if max(width,height) > 500 : # Image is large enough to be considered a photo. numPhotoFiles += 1 else: # Image is too small to be a photo. numNonPhotoFiles += 1 # If more than half of files were photos, # print the absolute path of the folder. if numPhotoFiles > 10 and numPhotoFiles > numNonPhotoFiles: print(foldername)
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