বিউটিফুলসপ find_all_previous

from bs4 import BeautifulSoup

html = """
<li>পিএইচপি</li>
<li>জাভা</li>
<li>পাইথন</li>
"""

result = BeautifulSoup(html, "html.parser")

last = result.find_all("li")[-1]
items = last.find_all_previous("li")

for item in items:
  print(item.get_text())