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Python常用爬蟲(chóng)代碼總結(jié)方便查詢(xún)-創(chuàng)新互聯(lián)

beautifulsoup解析頁(yè)面

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from bs4 import BeautifulSoup
soup = BeautifulSoup(htmltxt, "lxml")
# 三種裝載器
soup = BeautifulSoup("

", "html.parser") ### 只有起始標(biāo)簽的會(huì)自動(dòng)補(bǔ)全,只有結(jié)束標(biāo)簽的會(huì)自動(dòng)忽略 ### 結(jié)果為:
soup = BeautifulSoup("

", "lxml") ### 結(jié)果為:
soup = BeautifulSoup("

", "html5lib") ### html5lib則出現(xiàn)一般的標(biāo)簽都會(huì)自動(dòng)補(bǔ)全 ### 結(jié)果為:

# 根據(jù)標(biāo)簽名、id、class、屬性等查找標(biāo)簽 ### 根據(jù)class、id、以及屬性alog-action的值和標(biāo)簽類(lèi)別查詢(xún) soup.find("a",class_="title",id="t1",attrs={"alog-action": "qb-ask-uname"})) ### 查詢(xún)標(biāo)簽內(nèi)某屬性的值 pubtime = soup.find("meta",attrs={"itemprop":"datePublished"}).attrs['content'] ### 獲取所有class為title的標(biāo)簽 for i in soup.find_all(class_="title"): print(i.get_text()) ### 獲取特定數(shù)量的class為title的標(biāo)簽 for i in soup.find_all(class_="title",limit = 2): print(i.get_text()) ### 獲取文本內(nèi)容時(shí)可以指定不同標(biāo)簽之間的分隔符,也可以選擇是否去掉前后的空白。 soup = BeautifulSoup('

The Dormouses story

The Dormouses story

', "html5lib") soup.find(class_="title").get_text("|", strip=True) #結(jié)果為:The Dormouses story|The Dormouses story ### 獲取class為title的p標(biāo)簽的id soup.find(class_="title").get("id") ### 對(duì)class名稱(chēng)正則: soup.find_all(class_=re.compile("tit")) ### recursive參數(shù),recursive=False時(shí),只find當(dāng)前標(biāo)簽的第一級(jí)子標(biāo)簽的數(shù)據(jù) soup = BeautifulSoup('abc','lxml') soup.html.find_all("title", recursive=False)</pre> <br> 當(dāng)前標(biāo)題:Python常用爬蟲(chóng)代碼總結(jié)方便查詢(xún)-創(chuàng)新互聯(lián) <br> 網(wǎng)站地址:<a href="http://weahome.cn/article/hoihh.html">http://weahome.cn/article/hoihh.html</a> </div> </div> </div> <div id="squ6kqw" class="other container"> <h3>其他資訊</h3> <ul> <li> <a href="/article/dgcdigj.html">ios開(kāi)發(fā)俱樂(lè)部 石家莊IOS開(kāi)發(fā)</a> </li><li> <a href="/article/dgcdihc.html">css邊框樣式怎么簡(jiǎn)寫(xiě) css樣式的簡(jiǎn)寫(xiě)屬性</a> </li><li> <a href="/article/dgcdish.html">部署常用的命令linux Java部署命令</a> </li><li> <a href="/article/dgcdipj.html">jquery詳細(xì) 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