human
Solve the following python programming problem given the following code:
@register.tag(name='eval')
def do_eval(parser, token):
assistant
#Here is the Python code you requested.

    """Usage: {% eval %}1 + 1{% endeval %}
    """
    nodelist = parser.parse(('endeval',))
    class EvalNode(template.Node, ):
        def render(self, context):
            return template.Template(nodelist.render(context)).render(template.Context(context))
    parser.delete_first_token()
    return EvalNode()