urllib相关

import urllib.request
#Python3中的urlretrieve下载
url = 'http://imgsrc.baidu.com/baike/pic/item/d002b34ba8072cb382025cfc.jpg'
filename = 'd:/project/test/guo.jpg'
urllib.request.urlretrieve(url, filename)

from urllib.parse import urlencode
#url中添加参数
data = {'offset':8, 'format':'json', 'key':'keyword'}
url = 'http://www.abc.com?' + urlencode(data)
#http://www.abc.com?offset=8&format=json&key=keyword