python中如何加载一张图片尺寸

pip install pillow

import os

from PIL import Image

path = os.path.join(os.getcwd(),"23.png")

img = Image.open(path)

print(img.format)          # PNG

print(img.size)            # (3500, 3500)

path = "http://h.hiphotos.baidu.com/image/pic/item/c8ea15ce36d3d5397966ba5b3187e950342ab0cb.jpg"

file = urllib2.urlopen(path)

tmpIm = cStringIO.StringIO(file.read())

img = Image.open(tmpIm)

print(img.format)           # JPEG

print(img.size)             # (801, 1200)