No line breaks in syntax highlighted code

Question

I've installed Sunburst Code Prettify on my new blog. The prettifier uses Highlight.js to prettify code. I've placed the following Python code in a post:

[prettify class="python"]
>>> s=set(['a','b','c'])
>>> ''.join(s)
'acb'
[/prettify]

And got the following highlighting (with some paragraphs for context):

The line breaks are lost, some > were converted to &#8221, and there's an annoying gray background behind the rounded black code frame.

I've tried another Highlight.js plugin, wp-highlight.js:

[code lang="python"]
>>> s=set(['a','b','c'])
>>> ''.join(s)
'acb'
[/code]

And got:

Same gray background, same loss of line breaks.

I've tried switching themes (currently using Mosaic, switched to the standard Twenty-Ten), with no success.

Any ideas what went wrong?

Update - what I've tried:

<pre>:

<pre>
[prettify class="python"]
>>> s=set(['a','b','c'])
>>> ''.join(s)
'acb'
[/prettify]
</pre>

Empty lines:

[prettify class="python"]
>>> s=set(['a','b','c'])

>>> ''.join(s)

'acb'
[/prettify]

Answer 1

I've found that you have to wrap code formatting shortcodes in pre tags.