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) 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') return href[0], size[0], date[0], get_mlink(href[0], headers) except IndexError: 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)
        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')
            return href[0], size[0], date[0], get_mlink(href[0], headers)
        except IndexError:
    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)
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)
        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')
        return href[0], size[0], date[0], title[0]
    except IndexError:
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 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 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">
                <span>/</span>
                <span>/</span>
                50.11平米
                <span>/</span>
                <span>/</span>
            <div class="tag"><span class="subway">近地铁</span><span class="vr">VR房源</span></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="*****">
        ************************************************************* 
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