How tornado preserves the line breaks in the string in render to display in the html page_html/css_WEB-ITnose

For example:
message = "hi
Hello!"# (including line breaks)
self.render("logentry.html", content=message)

But loginry. The html does not display line breaks, and is processed as follows:
message = "hi
                                                                                                                                                                               self.render("logentry.html", content=message)
Not only is it not implemented, but
is displayed as content

Please give me some advice, thank you

Reply to discussion (solution)

Just use anti-transfer http://www.qttc.net/201305320.html