I am almost finishing with the Art Market Place Project, and I quite don’t understand something:
def buy_artwork(self): if artwork.owner != self: art_listing = None for listing in venner.listings: if listing.art == artwork: art_listing = listing break if art_listing != None: art_listing.art.owner = self veneer.remove_listing(art_listing)
I don’t really understand why art_listing = None and art_listing != None and what that means.
p.s. even after watching the walkthrough, I still don’t understand