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b搜索不到.jpg,一直返回-1,具体如图
具体的代码如下:
import urllib.request
import os
def url_open(url):
req = urllib.request.Request(url)
req.add_header('User-Agent', 'Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.221 Safari/537.36 SE 2.X MetaSr 1.0')
response = urllib.request.urlopen(req)
html = response.read()
print(url)
return html
def get_page(url):
html= url_open(url).decode('utf-8')
a = html.find('current-comment-page') + 23
b = html.find(']', a)
return html[a:b]
def find_imgs(url):
html= url_open(url).decode('utf-8')
img_addrs = []
a = html.find('img src=')
print(a)
while a!=-1:
b= html.find('.jpg',a,a+255)
print(b)
if b != -1:
img_addrs.append(html[a+9:b+4])
else:
b = a + 9
a = html.find('img.src=',b)
print(img_addrs)
for each in img_addrs:
print(each)
def save_imgs(folder,img_addrs):
pass
def download_mm(folder='ooxx',pages=10):
os.mkdir(folder)
os.chdir(folder)
url ='http://jandan.net/ooxx/'
page_num = int(get_page(url))
for i in range(pages):
page_num -=i
page_url = url + 'page-' + str(page_num) + '#comments'
img_addrs = find_imgs(page_url)
save_imgs(folder,img_addrs)
if __name__=='__main__':
download_mm()
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