python动态调用子类
假设一个父类Book有若干子类：EnglishBook,ChineseBook,JapaneseBook
对应englishbook.py,chinesebook.py,japanesebook.py
#book.py
class Book():
def __init__(self, foo, bar):
pass
#englishbook.py
class EnglishBook():
def __init__(self, foo, bar):
Book.__init__(self, foo, bar)
BOOK_MAPPING = {'chinese':1L, 'english':2L, 'japanese':3L}
BID_BOOK = dict((BOOK_MAPPING, imp.load_source(book.capitalize() + 'Book', os.path.join('.', book+ 'book.py'))) for book in BOOK_MAPPING)
使用时
bid = 1L
book = BOOK_MAPPING
bcls = getattr(book, book.__name__)
bb = bcls(foo, bar)
页:
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