#coding=utf8from urllib import requestimport reimport urllib,osurl='http://tieba.baidu.com/p/3840085725'def get_image(url):  #獲取頁面源碼  page = urllib.request.urlopen(url)  html = page.read()  #解碼，否則報錯  html = html.decode('utf8')  #正則匹配獲?。ǎ┑膬热? reg = r'src="(https.+?.[jpg,png])"'  imge = re.compile(reg)  # 獲取正則匹配的數據，"(.+?.jpg)" 的數據，返回一個list  imglist = imge.findall(html)  return imglistdef save_img(imglist):  dir = os.path.join(os.path.dirname(__file__),'img')  i=1  for img in imglist:    #python3格式化字符串的另一種寫法    imgpath = f'{dir}//image{i}.jpg'    try:      #urlretrieve下載圖片并保存到本地      urllib.request.urlretrieve(img,imgpath)      i += 1      print(u'圖片開始下載')    except Exception:      print(f'image:{img}下載失敗')      continueimglist = get_image(url)save_img(imglist)