Return information in mouse over on html.

core_tags.py

# /templatetags/core_tags.py

from django import template
from django.utils.safestring import mark_safe

register = template.Library()


@register.filter
def teste(value, arg):
    result = '<b title="%s">%s</b>' % (arg, value)
    return mark_safe(result)


# templates.html
<td>{{ person.email|teste:person.full_name }}</td>

# O title retorna uma informação em mouse over.