Build unordered list in HTML from a python list

[Daniel Fetchinson]

> I have this python list that represets a sitemap:
>
> tree = [{'indent': 1, 'title':'Item 1', 'hassubfolder':False},
>          {'indent': 1, 'title':'Item 2', 'hassubfolder':False},
>          {'indent': 1, 'title':'Folder 1', 'hassubfolder':True},
>          {'indent': 2, 'title':'Sub Item 1.1', 'hassubfolder':False},
>          {'indent': 2, 'title':'Sub Item 1.2', 'hassubfolder':False},
>          {'indent': 1, 'title':'Item 3', 'hassubfolder':False},
>          {'indent': 1, 'title':'Folder 2', 'hassubfolder':True},
>          {'indent': 2, 'title':'Sub Item 2.1', 'hassubfolder':False},
>          {'indent': 2, 'title':'Folder 2.1', 'hassubfolder':True},
>          {'indent': 3, 'title':'Sub Item 2.1.1', 'hassubfolder':False},
>          {'indent': 3, 'title':'Sub Item 2.1.2', 'hassubfolder':False},
>         ]
>
>  From that list I want to create the following HTML code:
>
> <ul id="tree">
>    <li>Item 1</li>
>    <li>Item 2</li>
>    <li>Folder 1
>      <ul>
>        <li>Sub Item 1.1</li>
>        <li>Sub Item 1.2</li>
>      </ul>
>    </li>
>    <li>Item 3</li>
>    <li>Folder 2
>      <ul>
>        <li>Sub Item 2.1</li>
>        <li>Folder 2.1
>          <ul>
>            <li>Sub Item 2.1.1</li>
>            <li>Sub Item 2.1.2</li>
>          </ul>
>        </li>
>      </ul>
>    </li>
> </ul>
>
> If an item of the list has 'True' for the 'hassubfolder' key than a new
> "<ul><li>" must be created instead of "</li>" after its title. (See
> "Folder 2" node in the HTML code above.
>
> My problem is: How do I keep track of the closing tags while iterating
> over the python list?

Elementtree has already been mentioned as a solution, but if you need
something more lightweight, give markup.py a try:
http://markup.sourceforge.net/ it's a single module and very easy to
use for the sort of things you are after.

Cheers,
Daniel

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