子标签和后代标签: .children 和 .descendants
Posted wyy1480
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昨天看书，没有用enumurate枚举的时候，完全发觉不了他们的区别，倍感困惑。
今天看了其他人写的教程，用了枚举法，然后就发现他们之间的区别了。
还要注意，子代接下一个子代时，可能是换行符，看children找出的子代，你就可以体会到啦！
descendants是找了子标签，然后再一步步探入别人的家中，把一个个后台，按辈分由大往小找着。
html ="""
<html>
<head>
<title>The Dormouse's story</title>
</head>
<body>
<p class="story">
Once upon a time there were three little sisters; and their names were
<a href="http://example.com/elsie" class="sister" id="link1">
<span>Elsie</span>
</a>
<a href="http://example.com/lacie" class="sister" id="link2">Lacie</a>
and
<a href="http://example.com/tillie" class="sister" id="link3">Tillie</a>
and they lived at the bottom of a well.
</p>
<p class="story">...</p>
"""from bs4 import BeautifulSoup
soup1 = BeautifulSoup(html, 'lxml')
print(soup1.p.children)
for i, child in enumerate(soup1.p.children):
print(i, child)
<list_iterator object at 0x000000DD59609898>
0
Once upon a time there were three little sisters; and their names were
1 <a class="sister" href="http://example.com/elsie" id="link1">
<span>Elsie</span>
</a>
2
3 <a class="sister" href="http://example.com/lacie" id="link2">Lacie</a>
4
and
5 <a class="sister" href="http://example.com/tillie" id="link3">Tillie</a>
6
and they lived at the bottom of a well.
from bs4 import BeautifulSoup
soup2 = BeautifulSoup(html, 'lxml')
print(soup2.p.children)
for i, desc in enumerate(soup2.p.descendants):
print(i, desc)
<list_iterator object at 0x000000DD595897B8>
0
Once upon a time there were three little sisters; and their names were
1 <a class="sister" href="http://example.com/elsie" id="link1">
<span>Elsie</span>
</a>
2
3 <span>Elsie</span>
4 Elsie
5
6
7 <a class="sister" href="http://example.com/lacie" id="link2">Lacie</a>
8 Lacie
9
and
10 <a class="sister" href="http://example.com/tillie" id="link3">Tillie</a>
11 Tillie
12
and they lived at the bottom of a well.
继续潜水，后期再来丰富吧，记录一下
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