def handle_min_max_height(function):
    """Decorate a function setting used height, handling {min,max}-height."""
    @functools.wraps(function)
    def wrapper(box, *args):
        computed_margins = box.margin_top, box.margin_bottom
        result = function(box, *args)
        if box.height > box.max_height:
            box.height = box.max_height
            box.margin_top, box.margin_bottom = computed_margins
            result = function(box, *args)
        if box.height < box.min_height:
            box.height = box.min_height
            box.margin_top, box.margin_bottom = computed_margins
            result = function(box, *args)
        return result
    wrapper.without_min_max = function
    return wrapper
Decorate a function setting used height, handling {min,max}-height.
weasyprint/layout/min_max.py