2022-01-15 22:56:38
浏览数 (3)
代码语言：javascript
复制from bs4 import BeautifulSoup
# demo 1
# soup = BeautifulSoup(open("index.html"))
soup = BeautifulSoup("<html><head><title>index</title></head><body>content</body></html>", "lxml")
print(soup.head)
html_doc = """
<html><head><title>index</title></head>
<body>
<p class="title"><b>首页</b></p>
<p class="main">我常用的网站
<a href="https://www.google.com" class="website" id="google">Google</a>
<a href="https://www.baidu.com" class="website" id="baidu">Baidu</a>
<a href="https://cn.bing.com" class="website" id="bing">Bing</a>
</p>
<div><!--这是注释内容--></div>
<p class="content1">...</p>
<p class="content2">...</p>
</body>
"""
# demo 2
soup = BeautifulSoup(html_doc, "lxml");
p_tag = soup.p
print(p_tag.name)
print(p_tag["class"])
print(p_tag.attrs)
p_tag.name="myTag" # attrs 同样可被修改，操作同字典
print(p_tag)
# demo 3
soup = BeautifulSoup(html_doc, "lxml");
print(soup.p.b)
# demo 4
soup = BeautifulSoup(html_doc, "lxml");
a_tags=soup.find_all("a")
print(a_tags)
# demo 5
soup = BeautifulSoup(html_doc, "lxml");
head_tag=soup.head
print(head_tag)
print(head_tag.contents)
for child in head_tag.children:
print("child is : ", child)
# demo 6
soup = BeautifulSoup(html_doc, "lxml");
head_tag=soup.head
for child in head_tag.descendants:
print("child is : ", child)
# demo 7
soup = BeautifulSoup(html_doc, "lxml");
title_tag=soup.title
print(title_tag.parent)
print(type(soup.html.parent))
print(soup.parent)
# demo 8
soup = BeautifulSoup(html_doc, "lxml");
a_tag=soup.a
for parent in a_tag.parents:
print(parent.name)
# demo 9
soup = BeautifulSoup(html_doc, "lxml");
div_tag=soup.div
print(div_tag.next_sibling)
print(div_tag.next_sibling.next_sibling)
# demo 10
soup = BeautifulSoup(html_doc, "lxml");
div_tag=soup.div
for pre_tag in div_tag.previous_siblings:
print("pre_tag is : ", pre_tag)
# demo 11
soup = BeautifulSoup(html_doc, "lxml");
head_tag=soup.head
print(head_tag.next_element)
title_tag=soup.p
print(title_tag.next_element)
# demo 12
soup = BeautifulSoup(html_doc, "lxml");
div_tag=soup.div
for next_element in div_tag.next_elements:
print("next_element is : ", next_element)
