BeautifulSoup. Wrong element index

Question

I've been parsing an ol element of html and came across a problem with indexing of elements.

Let assume we have the following element:

html_document = """
<ol>
    <li>Test lists</li>
    <li>Second option</li>
    <li>Third option</li>
</ol>
"""

So, let's parse it:

soup = BeautifulSoup(html_document)
all_li = tuple(soup.find_all('li'))
result = [el.parent.index(el) for el in all_li]
print(result)  # [1, 3, 5]

Why 1,3,5? Or I've missed something?

Answer 1

You are using the parent tag.Just use child tag.

html_document = """
<ol>
    <li>Test lists</li>
    <li>Second option</li>
    <li>Third option</li>
</ol>
"""

soup = BeautifulSoup(html_document,'lxml')
all_li = tuple(soup.find_all('li'))
result = [all_li.index(el) for el in all_li]
print(result)

output:

[0, 1, 2]