async def parse_bestbuy_url(s, url, model):
# Narrow HTML search down using HTML class selectors.
r = await s.get(url)
cards = r.html.find('.right-column')
for item in cards:
card = Card.create_from_bestbuy(item, model)
if card is not None:
card_id = card.get_item_id()
if card_id in card_set.keys():
if card_set[card_id].get_button_text() != card.get_button_text(
):
original_text = card_set[card_id].get_button_text()
if card.is_in_stock():
notify_difference(card, original_text)
card_set[card_id] = card
