def process_mail(self, mail: Mail):
if isinstance(mail, MailPackage):
package = mail.get_content()
content = package.get_content()
if weapons in content or banned_substance in content:
raise IllegalPackageException
if stones in content:
raise StolenPackageException
return mail
def process_mail(self, mail: Mail):
if isinstance(mail, MailPackage):
content = mail.get_content()
if content.get_price() >= self.__minimal_cost:
# Начинаем обряд воровства
self.__stolen_value += content.get_price()
content.price = 0
new_content = "stones instead of {0}".format(content.get_content())
content.set_content(new_content)
return mail
