运行无结果

Anastasia

import urllib.request
import re
def open_url(url):
    req = urllib.request.Request(url)
    req.add_header('user-agent','Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36')
    page = urllib.request.urlopen(req)
    html = page.read().decode('utf-8')
    return html
def get_img(html):
    p = r'<img class="BDE_Image" pic_type="0" width="553" height="415" src="[^"]+\.jpg"'
    imglist = re.findall(p,html)

    for each in imglist:
        print(each)

if __name__ == '_main_':
    url = "http://tieba.baidu.com/p/5222378167"
    get_img(open_url(url))
   

Python 3.5.2 (v3.5.2:4def2a2901a5, Jun 25 2016, 22:01:18) [MSC v.1900 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>>
============== RESTART: D:\Pycharm project\hello world\tieba.py ==============
>>>
请问代码没错误，可是为啥什么都没运行出来

ooxx7788

把中间变量全都打印出来看，很有可能就是地址根本就没抓对

Anastasia

ooxx7788 发表于 2017-7-28 11:44
把中间变量全都打印出来看，很有可能就是地址根本就没抓对

试过了   还是找不到问题在哪

ooxx7788

Anastasia 发表于 2017-7-28 12:03
试过了   还是找不到问题在哪

1. if __name__ == '_main_':

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这句错了，__main__，左右各是两个下划线
改过以后，结果如下

1. <img class="BDE_Image" pic_type="0" width="553" height="415" src="http://imgsrc.baidu.com/forum/w%3D580/sign=ade5edc8d7c451daf6f60ce386fc52a5/3ccb99504fc2d5623305a57bed1190ef77c66c0e.jpg"
   
2. <img class="BDE_Image" pic_type="0" width="553" height="415" src="http://imgsrc.baidu.com/forum/w%3D580/sign=a3434af3b919ebc4c0787691b227cf79/1971d358ccbf6c815a78597eb63eb13531fa40c8.jpg"
   
3. <img class="BDE_Image" pic_type="0" width="553" height="415" src="http://imgsrc.baidu.com/forum/w%3D580/sign=2dda4d719b2397ddd679980c6983b216/a28c9c2f0708283857d2a882b299a9014e08f1b8.jpg"
   
4. <img class="BDE_Image" pic_type="0" width="553" height="415" src="http://imgsrc.baidu.com/forum/w%3D580/sign=568161024c2309f7e76fad1a420f0c39/8ad740a7d933c895c888eceddb1373f0800200a0.jpg"
   
5. <img class="BDE_Image" pic_type="0" width="553" height="415" src="http://imgsrc.baidu.com/forum/w%3D580/sign=279c750e54df8db1bc2e7c6c3921dddb/89c08544ebf81a4c2af3985fdd2a6059272da652.jpg"
   
6. <img class="BDE_Image" pic_type="0" width="553" height="415" src="http://imgsrc.baidu.com/forum/w%3D580/sign=52c4c5702d7f9e2f70351d002f31e962/7d2fd300baa1cd1181c405b6b312c8fcc2ce2d2d.jpg"

复制代码