Question

For example:

list = [{"title_url": "joe_white", "id": 1, "title": "Joe White"},
        {"title_url": "peter_black", "id": 2, "title": "Peter Black"}]

How can I efficiently loop through this to create:

Joe White, Peter Black
<a href="/u/joe_white">Joe White</a>,<a href="/u/peter_black">Peter Black</a>

Thank you.

Answer 1

The first is pretty simple:

', '.join(item['title'] for item in list)

The second requires something more complicated, but is essentially the same:

','.join('<a href="/u/%(title_url)s">%(title)s</a>' % item for item in list)

Both use generator expressions, which are similar to list comprehensions without the need for an extra list creation