def lookup_book(book_id, id_type):
try:
e = lookup(book_id, id_type)
if e != None:
b = Book()
b.fromxml(e)
return b
else:
return None
except ValueError:
return None
def migrate(self):
xml = lookup(self.asin,"ASIN")
if xml != None:
self.fromxml(xml)
self.save()
