[已解决]求助python

zjxqqq

新人求助，为啥我这个打印不出地址啊，结果既不报错，也没有结果，希望有人能帮忙解答一下
源码如下


import urllib.request
import re


def url_open(url):
    req = urllib.request.Request(url)
    req.add_header('User-Agent','Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36 Core/1.70.3766.400 QQBrowser/10.6.4163.400')
    #req.add_header('Referer','http://wwww.mzitu.com')#设置请求头，不加爬下来的都是防盗图
    page = urllib.request.urlopen(req)
    html = page.read().decode('utf-8')
    return html

def get_img(html):
    p = r'<img class="lazy" src="[^"]+\.jpg"'
    imglist = re.findall(p,html)

    for each in imglist:
        print(each)

if __name__  == '__main__':
    url = "https://www.mzitu.com/page/2/"
    get_img(url_open(url))

最佳答案

月排行榜 / 总排行榜

Twilight6

2020-11-18 18:59:25

你正则匹配不到数据，我改了下


参考代码：

import urllib.request
import re


def url_open(url):
    req = urllib.request.Request(url)
    req.add_header('User-Agent','Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36 Core/1.70.3766.400 QQBrowser/10.6.4163.400')
    # req.add_header('Referer','https://www.mzitu.com') #设置请求头，不加爬下来的都是防盗图
    page = urllib.request.urlopen(req)
    html = page.read().decode('utf-8')
    return html

def get_img(html):
    p = r"<img class=.+? .+ data-original=('.+.jpg')"
    imglist = re.findall(p,html)

    for each in imglist:
        print(each)

if __name__  == '__main__':
    url = "https://www.mzitu.com/page/2/"
    get_img(url_open(url))

另外你 Referer 的网址多了个 w ，少了个s 帮你改了

跳转到最佳答案楼层

zjxqqq

没人吗  

Twilight6

你正则匹配不到数据，我改了下


参考代码：

import urllib.request
import re


def url_open(url):
    req = urllib.request.Request(url)
    req.add_header('User-Agent','Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36 Core/1.70.3766.400 QQBrowser/10.6.4163.400')
    # req.add_header('Referer','https://www.mzitu.com') #设置请求头，不加爬下来的都是防盗图
    page = urllib.request.urlopen(req)
    html = page.read().decode('utf-8')
    return html

def get_img(html):
    p = r"<img class=.+? .+ data-original=('.+.jpg')"
    imglist = re.findall(p,html)

    for each in imglist:
        print(each)

if __name__  == '__main__':
    url = "https://www.mzitu.com/page/2/"
    get_img(url_open(url))

另外你 Referer 的网址多了个 w ，少了个s 帮你改了