下载一只猫的图片（其中500和600可以替换成其他的数字）
import urllib.request
reponse = urllib.request.urlopen('http://placekitten.com/g/500/600')
cat_img = reponse.read()
with open('E:\图片\cat_500_600.jpg','wb') as f:
f.write(cat_img)
print('success')
拼命折腾，最差不过大器晚成~
import urllib.request
reponse = urllib.request.urlopen('http://placekitten.com/g/500/600')
cat_img = reponse.read()
with open('E:\图片\cat_500_600.jpg','wb') as f:
f.write(cat_img)
print('success')
