Python利用requests模块下载图片实例代码

# coding: utf-8import MySQLdbimport requestsimport osimport refrom threading import Threadimport datetimeheader = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) '      'Chrome/63.0.3239.132 Safari/537.36'}file_path = 'F://mlu2'if not os.path.exists(file_path): os.mkdir(file_path)class Spider(object): def __init__(self, file_path, header):  self.file_path = file_path  self.header = header @staticmethod def timer(func):  def time_count(*args):   start_time = datetime.datetime.now()   func(*args)   end_time = datetime.datetime.now()   day = (end_time - start_time).days   times = (end_time - start_time).seconds   hour = times / 3600   h = times % 3600   minute = h / 60   m = h % 60   second = m   print "爬取完成"   print "一共用时%s天%s时%s分%s秒" % (day, hour, minute, second)  return time_count def get_link(self):  conn = MySQLdb.connect(host='localhost',        port=3306,        user='root',        passwd='729814',        db='mlu',        charset='utf8')  cur = conn.cursor()  sql = 'select image from msg limit 100' # image为事先爬取存到MySQL的图片链接地址  cur.execute(sql)  img_link = cur.fetchall()  return img_link def download(self, link):  filename = re.findall(r'.*/(.+)', link)[0]  try:   pic = requests.get(link, headers=self.header)   if pic.status_code == 200:    with open(os.path.join(self.file_path)+os.sep+filename, 'wb') as fp:     fp.write(pic.content)     fp.close()   print "下载完成"  except Exception as e:   print e @timer def run_main(self):  threads = []  links = self.get_link()  for link in links:   img = str(link[0])   t = Thread(target=self.download, args=[img])   t.start()   threads.append(t)  for t in threads:   t.join()spider = Spider(file_path, header)spider.run_main()