""" 先来说一下jpg图片和png图片的区别 jpg格式:是有损图片压缩类型,可用最少的磁盘空间得到较好的图像质量 png格式:不是压缩性,能保存透明等图 """ from PIL import Image import cv2 as cv import os def PNG_JPG(PngPath): img = cv.imread(PngPath, 0) w, h = img.shape[::-1] infile = PngPath outfile = os.path.splitext(infile)[0] + ".jpg" img = Image.open(infile) img = img.resize((int(w / 2), int(h / 2)), Image.ANTIALIAS) try: if len(img.split()) == 4: # prevent IOError: cannot write mode RGBA as BMP r, g, b, a = img.split() img = Image.merge("RGB", (r, g, b)) img.convert(\'RGB\').save(outfile, quality=70) os.remove(PngPath) else: img.convert(\'RGB\').save(outfile, quality=70) os.remove(PngPath) return outfile except Exception as e: print("PNG转换JPG 错误", e) if __name__ == \'__main__\': PNG_JPG(r"C:\Users\lenovo\Desktop\newI\s.png")