Python-如何使用BeautifulSoup将一个类定位到另一个类中?

您可以使用 soup.select 根据 CSS selector .

from bs4 import BeautifulSoup


html_doc = '''<tr class="phone">
  <a href="tel:+18005551212" class="number"></a>
</tr> 

<tr class="mobile">
  <a href="+13034997111" class="number"></a>
</tr> '''

soup = BeautifulSoup(html_doc)

# Find any tag with a class of "number"
# that is a descendant of a tag with
# a class of "mobile"
mobiles = soup.select(".mobile .number")
print mobiles

# Find a tag with a class of "number"
# that is an immediate descendent
# of a tag with "mobile"
mobiles = soup.select(".mobile > .number")
print mobiles

# Find an <a class=number> tag that is an immediate
# descendent of a <tr class=mobile> tag.
mobiles = soup.select("tr.mobile > a.number")
print mobiles

find_all() 元素,然后遍历列表并打印其 parent 的类是“移动”。

for dom in soup.find_all("a", "number"):
    # this returns a list of class names
    for class in dom.parent()["class"]:     
    if class == "mobile":
        print(dom.string)

或使用 select() 用于CSS选择器样式

for dom in soup.select("tr.mobile a.number"):
    print(dom.string)