An incrementing Django template tag that can be used for things like Quantity inputs, etc...

django_incrementing_tag.py

class RangeNode(Node):
    def __init__(self, num, context_name):
        self.num, self.context_name = num, context_name
    def render(self, context):
        context[self.context_name] = range(int(self.num))
        return ""

@register.tag
def num_range(parser, token):
    """
    Takes a number and iterates and returns a range (list) that can be
    iterated through in templates

    Syntax:
    {% num_range 5 as some_range %}

    {% for i in some_range %}
      {{ i }}: Something I want to repeat\n
    {% endfor %}

    Produces:
    0: Something I want to repeat
    1: Something I want to repeat
    2: Something I want to repeat
    3: Something I want to repeat
    4: Something I want to repeat
    """
    try:
        fnctn, num, trash, context_name = token.split_contents()
    except ValueError:
        raise TemplateSyntaxError, "%s takes the syntax %s number_to_iterate\
            as context_variable" % (fnctn, fnctn)
    if not trash == 'as':
        raise TemplateSyntaxError, "%s takes the syntax %s number_to_iterate\
            as context_variable" % (fnctn, fnctn)
    return RangeNode(num, context_name)