import re, string

def linebreaksli(value):
    "Converts strings with newlines into <li></li>s"
    value = re.sub(r'\r\n|\r|\n', '\n', value) # normalize newlines
    lines = re.split('\n', value)
    lines = ['<li>%s</li>' % line for line in lines]
    return '\n'.join(lines)