python实现批量图片格式转换

# 将jpg格式转位png 
import os 
from PIL import Image 
import shutil 
import sys 
 
# Define the input and output image 
output_dirHR = '../data/Mosaic_HR/' 
output_dirLR = '../data/Mosaic_LR/' 
if not os.path.exists(output_dirHR): 
  os.mkdir(output_dirHR) 
if not os.path.exists(output_dirLR): 
  os.mkdir(output_dirLR) 
 
 
 
def image2png(dataset_dir,type): 
  files = [] 
  image_list = os.listdir(dataset_dir) 
  files = [os.path.join(dataset_dir, _) for _ in image_list] 
  for index,jpg in enumerate(files): 
    if index > 100000: 
      break 
    try: 
      sys.stdout.write('r>>Converting image %d/100000 ' % (index)) 
      sys.stdout.flush() 
      im = Image.open(jpg) 
      png = os.path.splitext(jpg)[0] + "." + type 
      im.save(png) 
      # 将已经转换的图片移动到指定位置 
      ''''' 
      if jpg.split('.')[-1] == 'jpg': 
        shutil.move(png,output_dirLR) 
      else: 
        shutil.move(png,output_dirHR) 
      ''' 
      shutil.move(png, output_dirHR) 
    except IOError as e: 
      print('could not read:',jpg) 
      print('error:',e) 
      print('skip itn') 
 
  sys.stdout.write('Convert Over!n') 
  sys.stdout.flush() 
 
 
 
if __name__ == "__main__": 
  current_dir = os.getcwd() 
  print(current_dir) # /Users/gavin/PycharmProjects/pygame 
  data_dir = '/home/gavin/MyProject/python/nesunai_faces/' 
 
  image2png(data_dir,'png')