用PLT比较轻量级，用opencv是比较重量级 import numpy as np from PIL import Image if __name__ == '__main__': image_file = '/Users/mac/Documents/学习文档/机器学习/5.Package/son.png' height = 100 #假定写入图片的高度是100 img = Image.open(image_file) img_width, img_height = img.size