def add_addon_author(original, copy):
 author = original.listed_authors[0]
 AddonUser.objects.create(addon=copy, user=author, listed=True)
 return author

def add_addon_author ( original , copy ) : author = original . listed_authors [ 0 ] AddonUser . objects . create ( addon = copy , user = author , listed = True ) return author
make both add-ons share an author .