find_next, find_previous and Friends

find_next and find_previous search forward or backward through the flat document from a starting node, not from the root. They are the right tools when the answer to "which element?" depends on position relative to something you already found.

find_next

from bs4 import BeautifulSoup

html = "<p>Label: <span>x</span></p><div><b>value</b></div>"
soup = BeautifulSoup(html, "html.parser")

span = soup.find("span")
print(span.find_next("b").get_text())  # value

find_next accepts the same filters as find (name, attributes, text, function), and returns None when nothing later in the document matches.

find_previous

b = soup.find("b")
print(b.find_previous("span").get_text())  # x

find_all_next and find_all_previous

The plural forms return a list of all later or earlier matches:

html = "<p>start</p><b>1</b><b>2</b><b>3</b>"
soup = BeautifulSoup(html, "html.parser")

p = soup.find("p")
print([b.get_text() for b in p.find_all_next("b")])      # ['1', '2', '3']
b3 = soup.find_all("b")[2]
print([b.get_text() for b in b3.find_all_previous("b")])  # ['2', '1']

Practical Pattern: Field Next to a Label

Forms and definition lists are classic use cases: locate the label text, then take the next meaningful element:

html = "<dt>Author</dt><dd>Ada L.</dd>"
soup = BeautifulSoup(html, "html.parser")
label = soup.find("dt")
print(label.find_next("dd").get_text(strip=True))  # Ada L.

Summary

find_next/find_previous (and their find_all_* plural forms) search relative to a node's position in the document instead of from the root. Use them for position-dependent extraction like "the value after this label", and apply the usual None guards to the result.