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 '''