代码：批量图片格式转换（jpg-png）

import globimport osimport threadingfrom PIL import Imagedef create_image(infile, index):os.path.splitext(infile)im = Image.open(infile)im.save("./test_240/n00000010/images/n00000010_" + str(index) + ".JPEG", "JPEG") #存储路径def start():index = 0for infile in glob.glob("./resize_240/images/*.jpg"): #数据来源t = threading.Thread(target=create_image, args=(infile, index,))t.start()t.join()index += 1if __name__ == "__main__":start()