def pull_books(self, N_BOOKS = None):
books = []
if N_BOOKS is None:
for p in Publisher.enlist():
books += list(p.books)
self.shelf = Warehouse(books * 5)
return
else:
from itertools import chain
all_books = list(chain.from_iterable([list(p.books) for p in Publisher.enlist()]))
self.shelf = Warehouse([random.choice(all_books) for _ in range(N_BOOKS)])
def order(self, customer, orders : []):
book_list = []
for order in orders:
# Author
if hasattr(order, 'surname'):
# searching most recent release among all publishers
publishers = Publisher.enlist() # all existing publishers
most_recent = []
for p in publishers:
books = p.booksByAuthor(order)
if books:
most_recent.append(books[0])
# the most recent book:
book = list(sorted(most_recent, key=lambda x: x.uptime()))[0]
book = Book.reprice(book, self.get_real_price(book))
book_list.append(book)
else:
# Book:
book_list.append(Book.reprice(order, self.get_real_price(order)))
order = Order(self, customer, book_list)
# if the orders are processed simultaneously & automatically
if self.AUTO_BUY:
if not order:
# order cannot be executed
# and books need to be printed and delivered
# self.orders is a queue for those orders.
self.orders.append(order)
else:
# Buy it!
# Order is executed
order.execute()
return order
def pick_pub():
pub = random.choice(
Publisher.enlist()) if Publisher.enlist() else Publisher(
'SomePub', [])
return pub
