Question

我想使用beautifulsoap获取优惠券代码时出现错误

这是页面的一部分：

<input id="text1" step="0.5" type="number" value="" name="text1">

这是我的代码：

 <ul class="nc-nav__promo-modal--global-links"><div class="nc-nav__promo-modal--global-divider"></div>
<li><a href="/pk/c/womens_sale_events/35OffWearNowStyles?intcmp=seealloffersnav_1_spanstylefontweight500top035offourfavoritewearnowstylesonlineonlyusecodebstylefontweight700top0hisummerbspan"><div><span style="font-weight: 500; top: 0">35% off our favorite wear-now styles.* Online only. Use code <b style="font-weight: 700; top: 0">HISUMMER.</b></span></div></a><button type="button" class="nc-nav__promo-modal--global-details-button" aria-describedby="dialogDetailsBtn-0">Details</button></li>
<li><a href="/pk/c/womens_sale_events/35OffWearNowStyles?intcmp=seealloffersnav_1_spanstylefontweight500top035offourfavoritewearnowstylesonlineonlyusecodebstylefontweight700top0hisummerbspan"><div><span style="font-weight: 500; top: 0">35% off our favorite wear-now styles.* Online only. Use code <b style="font-weight: 700; top: 0">MAY20.</b></span></div></a><button type="button" class="nc-nav__promo-modal--global-details-button" aria-describedby="dialogDetailsBtn-0">Details</button></li>
</ul>

我收到以下错误： def parse(self, response): self.mongo.GetAllDocuments() soup = BeautifulSoup(response.text, 'html.parser') url,off,coupon,itemtype = "","","","" containersC=soup.select(".nc-nav__promo-modal--global-links > li") for itemC in containersC: coupon = itemC.a.div.span.b.text

Answer 1

您的代码假定所有实例的HTML结构均相同。如果缺少b（或其他任何元素），则会收到该错误。一种方法是在尝试打印b标签之前先对其进行测试，例如：

from bs4 import BeautifulSoup

html = """ <ul class="nc-nav__promo-modal--global-links"><div class="nc-nav__promo-modal--global-divider"></div>
<li><a href="/pk/c/womens_sale_events/35OffWearNowStyles?intcmp=seealloffersnav_1_spanstylefontweight500top035offourfavoritewearnowstylesonlineonlyusecodebstylefontweight700top0hisummerbspan"><div><span style="font-weight: 500; top: 0">35% off our favorite wear-now styles.* Online only. Use code <b style="font-weight: 700; top: 0">HISUMMER.</b></span></div></a><button type="button" class="nc-nav__promo-modal--global-details-button" aria-describedby="dialogDetailsBtn-0">Details</button></li>
<li><a href="/pk/c/womens_sale_events/35OffWearNowStyles?intcmp=seealloffersnav_1_spanstylefontweight500top035offourfavoritewearnowstylesonlineonlyusecodebstylefontweight700top0hisummerbspan"><div><span style="font-weight: 500; top: 0">35% off our favorite wear-now styles.* Online only. Use code <b style="font-weight: 700; top: 0">MAY20.</b></span></div></a><button type="button" class="nc-nav__promo-modal--global-details-button" aria-describedby="dialogDetailsBtn-0">Details</button></li>
</ul>"""

soup = BeautifulSoup(html, 'html.parser')

for li_tag in soup.select(".nc-nav__promo-modal--global-links > li"):
    b_tag = li_tag.find('b')

    if b_tag:
        print(b_tag.text)

对于您的HTML，这给出了：

HISUMMER.
MAY20.

Python.'NoneType'对象没有属性'b'

1 个答案: