python爬取某站磁力链

不同磁力链网站网页内容都不同，需要定制

1，并发爬取

并发爬取后，好像一会就被封了

import requests
from lxml import etree
import re
from concurrent.futures import ThreadPoolExecutor

def get_mlink(url, headers):
    """输入某影片磁力链所在的网页，返回该网页中的磁力链"""
    r = requests.get(url, headers=headers)
    select = etree.HTML(r.text)
    try:
        magnetlink = select.xpath('//textarea[@id="magnetLink"]//text()')
        return magnetlink[0]
    except AttributeError:
        return None

def get_page_mlinks(url, headers):
    """输入某一页搜索结果，返回该网页中所有的元组（url, 影片大小，时间，磁力链）"""
    r = requests.get(url, headers=headers)
    select = etree.HTML(r.text)
    div_rows = select.xpath('//div[@class="row"]')

    def get_each(se):
        size = se.xpath('.//div[@class="col-sm-2 col-lg-1 hidden-xs text-right size"]//text()')
        date = se.xpath('.//div[@class="col-sm-2 col-lg-2 hidden-xs text-right date"]//text()')
        href = se.xpath('.//a/@href')
        try:
            return href[0], size[0], date[0], get_mlink(href[0], headers)
        except IndexError:
            pass

    with ThreadPoolExecutor() as executor:  # 并发执行爬取单个网页中所有的磁力链
        res = executor.map(get_each, div_rows)

    return res

def get_urls(baseurl, headers, suffix=None):
    """输入搜索网页，递归获取所有页的搜索结果"""
    if suffix:
        url = baseurl + suffix
    else:
        url = baseurl

    r = requests.get(url, headers=headers)
    select = etree.HTML(r.text)
    page_suffixes = select.xpath('//ul[@class="pagination pagination-lg"]'
                                 '//li//a[@name="numbar"]/@href')

    # 有时该站会返回/search/.../search/...search/.../page，需要处理下
    p = r'/search/[^/]+/page/\d+(?=\D|$)'
    page_suffixes = [re.search(p, i).group() for i in page_suffixes]

    # 如果还有下一页，需要进一步递归查询获取
    r = requests.get(url + page_suffixes[-1], headers=headers)
    select = etree.HTML(r.text)
    next_page = select.xpath('//ul[@class="pagination pagination-lg"]'
                             '//li//a[@name="nextpage"]/@href')
    if next_page:
        page_suffixes = page_suffixes + get_urls(baseurl, headers, next_page[0])

    return page_suffixes

if __name__ == '__main__':
    keyword = "金刚狼3"
    baseurl = 'https://btsow.club/search/{}'.format(keyword)  # 该站是采用get方式提交搜索关键词
    headers = {"Accept-Language": "en-US,en;q=0.8,zh-TW;q=0.6,zh;q=0.4"}

    urls = get_urls(baseurl, headers)
    new_urls = list(set(urls))
    new_urls.sort(key=urls.index)
    new_urls = [baseurl + i for i in new_urls]

    with ThreadPoolExecutor() as executor:
        res = executor.map(get_page_mlinks, new_urls, [headers for i in range(7)])

    for r in res:
        for i in r:
            print(i)

2，逐页爬取

手工输入关键词和页数

超过网站已有页数时，返回None

爬取单个搜索页中所有磁力链时，仍然用的是并发

import requests
from lxml import etree
from concurrent.futures import ThreadPoolExecutor

def get_mlink(url, headers):
    """输入某影片磁力链所在的网页，返回该网页中的磁力链"""
    r = requests.get(url, headers=headers)
    select = etree.HTML(r.text)
    try:
        magnetlink = select.xpath('//textarea[@id="magnetLink"]//text()')
        return magnetlink[0]
    except AttributeError:
        return None

def get_page_mlinks(url, headers):
    """输入某一页搜索结果，返回该网页中所有的元组（url, 影片大小，时间，磁力链）"""
    r = requests.get(url, headers=headers)
    select = etree.HTML(r.text)
    div_rows = select.xpath('//div[@class="row"]')

    def get_each(se):
        size = se.xpath('.//div[@class="col-sm-2 col-lg-1 hidden-xs text-right size"]//text()')
        date = se.xpath('.//div[@class="col-sm-2 col-lg-2 hidden-xs text-right date"]//text()')
        href = se.xpath('.//a/@href')
        try:
            return href[0], size[0], date[0], get_mlink(href[0], headers)
        except IndexError:
            pass

    with ThreadPoolExecutor() as executor:  # 并发执行爬取单个网页中所有的磁力链
        res = executor.map(get_each, div_rows)

    return res

if __name__ == '__main__':
    keyword = input('请输入查找关键词>> ')
    page = input('请输入查找页>> ')

    url = 'https://btsow.club/search/{}/page/{}'.format(keyword, page)
    headers = {"Accept-Language": "en-US,en;q=0.8,zh-TW;q=0.6,zh;q=0.4"}

    r = get_page_mlinks(url, headers)
    for i in r:
        print(i)

3，先输入影片，在选择下载哪个磁力链

import requests
from lxml import etree

def get_mlink(url, headers):
    """输入某影片磁力链所在的网页，返回该网页中的磁力链"""
    r = requests.get(url, headers=headers)
    select = etree.HTML(r.text)
    try:
        magnetlink = select.xpath('//textarea[@id="magnetLink"]//text()')
        return magnetlink[0]
    except AttributeError:
        return None

def get_row(row):
    size = row.xpath('.//div[@class="col-sm-2 col-lg-1 hidden-xs text-right size"]//text()')
    date = row.xpath('.//div[@class="col-sm-2 col-lg-2 hidden-xs text-right date"]//text()')
    href = row.xpath('.//a/@href')
    title = row.xpath('.//a/@title')
    try:
        return href[0], size[0], date[0], title[0]
    except IndexError:
        pass

if __name__ == '__main__':
    headers = {"Accept-Language": "en-US,en;q=0.8,zh-TW;q=0.6,zh;q=0.4"}

    while True:
        keyword = input('请输入查找关键词>> ')
        if keyword == 'quit':
            break
        url = 'https://btsow.club/search/{}'.format(keyword)
        r = requests.get(url, headers=headers)
        print(r.status_code)

        select = etree.HTML(r.text)
        div_rows = select.xpath('//div[@class="row"]')
        div_rows = [get_row(row) for row in div_rows if get_row(row)]
        if not div_rows:
            continue
        for index, row in enumerate(div_rows):
            print(index, row[2], row[1], row[3])

        # 选择和下载哪部片子
        choice = input('请选择下载项>> ')
        try:  # 如果不是数字，退回到输入关键词
            choice = int(choice)
        except ValueError:
            continue
        download_url = div_rows[choice][0]
        mlink = get_mlink(download_url, headers)
        print(r.status_code)
        print(mlink)
        print('\n\n')

执行效果：

4，补充下lxml的使用

            <div class="item" data-houseid="*****">
           *************************************************************
           </div>

           <div class="item" data-houseid="107102426781">
            <a class="img" href="https://sh.lianjia.com/ershoufang/107102426781.html" target="_blank" data-bl="list" data-log_index="5" data-housecode="107102426781" data-is_focus=""  data-el="ershoufang">
                <img class="lj-lazy" src="https://s1.ljcdn.com/feroot/pc/asset/img/blank.gif?_v=20200428212347" data-original="https://image1.ljcdn.com/110000-inspection/pc1_JZKtMEOU3_1.jpg.296x216.jpg.437x300.jpg">
                <div class="btn-follow follow" data-hid="107102426781"><span class="star"></span><span class="follow-text">关注</span></div>
                <div class="leftArrow"><span></span></div>
                <div class="rightArrow"><span></span></div><div class="price"><span>375</span>万</div>
            </a>
            <a class="title" href="https://sh.lianjia.com/ershoufang/107102426781.html" target="_blank" data-bl="list" data-log_index="5" data-housecode="107102426781" data-is_focus=""  data-el="ershoufang">临河位置，全明户型带边窗，满五年唯一，拎包入住</a>
            <div class="info">
                御桥
                <span>/</span>
                2室1厅
                <span>/</span>
                50.11平米
                <span>/</span>
                南
                <span>/</span>
                精装
            </div>
            <div class="tag"><span class="subway">近地铁</span><span class="vr">VR房源</span></div>
        </div>

       <div class="tag"><span class="subway">近地铁</span><span class="vr">VR房源</span></div> </div> 

       <div class="item" data-houseid="*****">
        *************************************************************
       </div>

要获取所有房源tilte，价格，朝向，装修情况等，可以：

elements = select.xpath('//div[@class="item"]')   # 所有房源组成的items列表，即所有class='item'的div标签

for element in elements:
    title = element.xpath('a[@class="title"]/text()')[0]   # class='item'的div标签下，所有class='title'的a标签
    price = element.xpath('a[@class="img"]/div[@class="price"]/span/text()')[0]
    _, scale, size, orient, deco = element.xpath('div[@class="info"]/text()')

    print(title, price, scale, size, orient, deco)

输入某小区的结果：

中间楼层+精装保养好+满两年+双轨交汇+诚意出售 385 2室1厅 62.7平米 南 精装
南北通风，户型方正，楼层佳位置佳，11/18号线双轨 368 2室1厅 52.49平米 南 精装
一手动迁 业主置换 急售 双南采光佳 看房方便 370 2室1厅 62.7平米 南 简装
临河位置，全明户型带边窗，满五年唯一，拎包入住 375 2室1厅 50.11平米 南 精装
一手动迁，税费少，楼层采光好，精装修。 388 2室1厅 62.7平米 南 精装
南北通两房 近地铁  拎包入住  业主诚意出售 508 2室2厅 90.88平米 南 其他