python更改图片后缀名为jpg格式

 1 import os
 2 import cv2
 3 class GeneDataset():
 4     def __init__(self,rootdir):
 5         self.rootdir = rootdir
 6         self.subdirs = []
 7     def looksubdir(self):
 8         list_dirs = os.walk(self.rootdir)
 9         for root, dirs, files in list_dirs:
10             for d in dirs:
11                 self.subdirs.append(os.path.join(root, d))
12                 print("subdir =", os.path.join(root, d))
13     def reformat(self):14         for subdir in self.subdirs:
15             list_dirs = os.walk(subdir)
16             for root, dirs, files in list_dirs:
17                 for f in files:
18                     srcname = os.path.join(root, f)
19                     print('srcname', srcname)
20                     srcformat = srcname.split('.')[-1]
21                     if srcformat is not '.jpg':
22                         img = cv2.imread(srcname)
23                         newname = srcname.replace(srcformat, 'jpg')
24                         print('newname=', newname)
25                         cv2.imwrite(newname, img)
26                         os.remove(srcname)
27 path = r'E:datapic'
28 myclassdataset = GeneDataset(path)
29 myclassdataset.looksubdir()
30 myclassdataset.reformat()