1 # -*-coding:utf-8-*- 2 __author__ = 'Deen' 3 ''' 4 题目说明： 你有一个目录，装了很多照片，把它们的尺寸变成都不大于 iPhone5 分辨率的大小。 5 6 思路： 先获取该目录下所有图片的绝对路径，再一个一个打开,resiz改变大小保存 7 ''' 8 9 from PIL import Image 10 import os 11 12 13 # 获取目录下所有图片的绝对路径 14 def list_files(dir, wirldcard, recursion): 15 files_text = list() 16 exts = wirldcard.split(" ") 17 files = os.listdir(dir) 18 for name in files: 19 fullname = os.path.join(dir, name) 20 if (os.path.isdir(fullname) & recursion): 21 list_files(fullname, wirldcard, recursion) 22 else: 23 for ext in exts: 24 if (name.endswith(ext)): 25 files_text.append(fullname) 26 break 27 # print files_text 28 return files_text 29 30 31 def images_resize(imgs, width, height): 32 n = 0 33 for img in imgs: 34 n += 1 35 image = Image.open(img) 36 out = image.resize((width, height), Image.ANTIALIAS) 37 out.save(str(n) + '.jpg', 'jpeg') 38 39 40 if __name__ == '__main__': 41 dir = "E:\images" 42 wildcard = ".jpg .png" 43 images_resize(list_files(dir, wildcard, 1), 500, 500) 44 45 ''' 46 参考代码： 47 import os 48 49 from PIL import Image 50 51 def resize_image(image): 52 im = Image.open(image) 53 width, height = im.size 54 if height > 1136 or width > 640: 55 th = height / 1136 56 td = width / 640 57 ts = max(th, td) 58 nh = int(height / ts) 59 nw = int(width / ts) 60 im = im.resize((nw, nh)) 61 im.save(image) 62 print('Successfully resized %s. New width is %i, new height is %i.' % (image, nh, nw)) 63 else: 64 print("There's no need to resize %s." % image) 65 66 def main(): 67 for i in os.listdir(): 68 try: 69 resize_image(i) 70 except IOError: 71 print("Oops! %s is not supported to make the change!" % i) 72 73 if __name__ == '__main__': 74 main() 75 76 '''