python基于gevent实现并发下载器代码实例

import geventfrom gevent import monkeyimport urllib.requestmonkey.patch_all()def my_download(url):    print('GET: %s' % url)    resp = urllib.request.urlopen(url)    data = resp.read()    print('%d bytes received from %s.' % (len(data), url))gevent.joinall([    gevent.spawn(my_download, "https://www.baidu.com"),    gevent.spawn(my_download, "https://www.cnblogs.com"),    gevent.spawn(my_download, "https://www.huya.com")  ])

GET: https://www.baidu.comGET: https://www.cnblogs.comGET: https://www.huya.com227 bytes received from https://www.baidu.com.46411 bytes received from https://www.cnblogs.com.353563 bytes received from https://www.huya.com.

import geventfrom gevent import monkeyimport urllib.requestmonkey.patch_all()def my_download(url, image_path):  print('GET: %s' % url)  resp = urllib.request.urlopen(url)  data = resp.read()  print('%d bytes received from %s.' % (len(data), url))    with open(image_path, "wb") as f:    f.write(data)gevent.joinall([  gevent.spawn(my_download, "https://huyaimg.msstatic.com/cdnimage/anchorpost/1099/4c/73ff3e6ce165fb658b2082d4d126c6_2168_1544414129.jpg", "1.jpg"),  gevent.spawn(my_download, "https://huyaimg.msstatic.com/cdnimage/anchorpost/1020/03/7949816c55f45b9adc9f03d9330af3_2168_1542941499.jpg", "2.jpg"),   gevent.spawn(my_download, "https://huyaimg.msstatic.com/cdnimage/anchorpost/1061/55/8071537fa10120c43c5a1359a88530_2168_1545302709.jpg", "3.jpg"),])