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使用Beautifulsoup解析HTML并写入CSV-AttributeError或没有html被解析

[英]Parsing HTML and writing to CSV using Beautifulsoup - AttributeError or no html being parsed

我接收到错误,或者使用以下代码未解析/编写任何内容:

soup = BeautifulSoup(browser.page_source, 'html.parser')
userinfo = soup.find_all("div", attrs={"class": "fieldWrapper"})
rows = userinfo.find_all(attrs="value")

with open('testfile1.csv', 'w') as outfile:
    writer = csv.writer(outfile)
    writer.writerow(rows)

行= userinfo.find_all(attrs =“ value”)

AttributeError:“ ResultSet”对象没有属性“ find_all”

因此,我尝试使用print进行for循环只是为了对其进行测试,但是在程序成功运行时它什么也没返回:

userinfo = soup.find_all("div", attrs={"class": "fieldWrapper"})
for row in userinfo:
    rows = row.find_all(attrs="value")
    print(rows)

这是我要解析的html。 我试图从值属性返回文本:

<div class="controlHolder">
                        <div id="usernameWrapper" class="fieldWrapper">
                            <span class="styled">Username:</span>
                            <div class="theField">
                                <input name="ctl00$cleanMainPlaceHolder$tbUsername" type="text" value="username" maxlength="16" id="ctl00_cleanMainPlaceHolder_tbUsername" disabled="disabled" tabindex="1" class="textbox longTextBox">
                                <input type="hidden" name="ctl00$cleanMainPlaceHolder$hdnUserName" id="ctl00_cleanMainPlaceHolder_hdnUserName" value="AAubrey"> 
                            </div>
                        </div>
                        <div id="fullNameWrapper" class="fieldWrapper">
                            <span class="styled">Full Name:</span>
                            <div class="theField">
                                <input name="ctl00$cleanMainPlaceHolder$tbFullName" type="text" value="Full Name" maxlength="50" id="ctl00_cleanMainPlaceHolder_tbFullName" tabindex="2" class="textbox longTextBox">
                                <input type="hidden" name="ctl00$cleanMainPlaceHolder$hdnFullName" id="ctl00_cleanMainPlaceHolder_hdnFullName" value="Anthony Aubrey">
                            </div>
                        </div>
                        <div id="emailWrapper" class="fieldWrapper">
                            <span class="styled">Email:</span>
                            <div class="theField">
                                <input name="ctl00$cleanMainPlaceHolder$tbEmail" type="text" value="email@email.com" maxlength="60" id="ctl00_cleanMainPlaceHolder_tbEmail" tabindex="3" class="textbox longTextBox">
                                <input type="hidden" name="ctl00$cleanMainPlaceHolder$hdnEmail" id="ctl00_cleanMainPlaceHolder_hdnEmail" value="aaubrey@bankatunited.com">
                                <span id="ctl00_cleanMainPlaceHolder_validateEmail" style="color:Red;display:none;">Invalid E-Mail</span>
                            </div>
                        </div>
                        <div id="commentWrapper" class="fieldWrapper">
                            <span class="styled">Comment:</span>
                            <div class="theField">
                                <textarea name="ctl00$cleanMainPlaceHolder$tbComment" rows="2" cols="20" id="ctl00_cleanMainPlaceHolder_tbComment" tabindex="4" class="textbox longTextBox"></textarea>
                                <input type="hidden" name="ctl00$cleanMainPlaceHolder$hdnComment" id="ctl00_cleanMainPlaceHolder_hdnComment">
                            </div>
                        </div>

您的第一个错误是由于find_all返回一个ResultSet(或多或少是一个列表)这一事实:您必须遍历userinfo的元素, find_all对这些元素调用find_all

对于您的第二个问题,我非常确定何时将字符串传递给attrs ,它会搜索以该字符串为类的元素。 您提供的html不包含带有class value元素,因此有意义的是什么也不会打印出来。 您可以使用.get('value')访问元素的值

要打印出文本输入的值,以下代码应该起作用。 (try / except只是为了使脚本在找不到文本输入时不会崩溃)

for field_wrapper in soup.find_all("div", attrs={"class": "fieldWrapper"}):
    try:
        print(field_wrapper.find("input", attrs={"type": "text"}).get('value'))
    except:
        continue

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