@register.tag
def gravatar_url(_parser, token):
    try:
        _tag_name, email = token.split_contents()
    except __HOLE__:
        raise template.TemplateSyntaxError(
            '{} tag requires a single argument'.format(
                token.contents.split()[0]))
    return GravatarUrlNode(email)
dataset/ETHPy150Open deis/deis/controller/web/templatetags/gravatar_tags.py/gravatar_url