__init__.py 文件源码

def _init(Module, MdSpi, TraderSpi):
    globals()['ApiStruct'] = __import__(__name__+'.ApiStruct', None, None, 'x')

    class LazyProperty(object):
        def __get__(self, obj, cls):
            if obj is None: return self
            value = self.fget()
            name = self.fget.__name__
            setattr(obj, name, value)
            delattr(cls, name)
            return value

    def lazy_property(func):
        self = LazyProperty()
        setattr(Module, func.__name__, self)
        self.fget = func
        return self

    @lazy_property
    def MdApi():
        from ._MdApi import _init, MdApi; _init(ApiStruct)
        return type('MdApi', (MdApi,), MdSpi)

    @lazy_property
    def TraderApi():
        from ._TraderApi import _init, TraderApi; _init(ApiStruct)
        return type('TraderApi', (TraderApi,), TraderSpi)