Code

    def _render_text(self, text, lang="markdown"):
        if lang == "markdown":
            return markdown.markdown(text, link_patterns=link_patterns,
                extensions=[
                    "codehilite",
                    "fenced_code",
                    "footnotes",
                    "nl2br",
                    "sane_lists",
                    "tables",
                    "toc",
                ])

var s = "JavaScript syntax highlighting";
alert(s);

s = "Python syntax highlighting"
print s

No language indicated, so no syntax highlighting. 
But let's throw in a <b>tag</b>.

Tables

Colons can be used to align columns.

Tables	Are	Cool
col 3 is	right-aligned	$1600
col 2 is	centered	$12
zebra stripes	are neat	$1

There must be at least 3 dashes separating each header cell.
The outer pipes (|) are optional, and you don't need to make the
raw Markdown line up prettily. You can also use inline Markdown.

Markdown	Less	Pretty
Still	`renders`	nicely
1	2	3