Python--BeautifulSoup库的介绍

1 # 遍历儿子节点2 for child in soup.body.children:3     print(child.name)4 5 # 遍历子孙节点6 for child in soup.body.descendants:7     print(child.name)

1 # 遍历所有先辈节点时，包括soup本身，所以要if...else...判断2 for parent in soup.a.parents:3     if parent is None:4         print(parent)5     else:6         print(parent.name)

1 # 遍历后续节点2 for sibling in soup.a.next_sibling:3     print(sibling)4 5 # 遍历前续节点6 for sibling in soup.a.previous_sibling:7     print(sibling)