使用urllib.request.urlretrieve方式：
from urllib.request import urlretrieve
urlretrieve("https://www.awaimai.com/wp-content/uploads/2017/09/phpinfo.png", "phpinfo.png")
如果要使用代理，需要先导入：socket和httplib2.socks模块：
from urllib.request import urlretrieve
import config
from httplib2 import socks
import socket
socks.setdefaultproxy(socks.PROXY_TYPE_HTTP, "127.0.0.1", 1080)
socket.socket = socks.socksocket
urlretrieve("https://www.awaimai.com/wp-content/uploads/2017/09/phpinfo.png", "phpinfo.png")
参考资料：