models.py 文件源码

def __getattr__(self, item):
        try:
            val = super(NewBaseModel, self).__getattribute__(item)
        except AttributeError:
            pass         # fall through to the rest of the logic...

        # try looking up via self._info, if we already have it.
        if item in self._info:
            return self._info[item]

        # if we're still here, let's load the object if we haven't done so already.
        if not self._full_init:
            self._refresh()

        # try one more time.
        if item in self._info:
            return self._info[item]
        else:
            raise AttributeError("'{0}' object has no attribute '{1}'".format(self.__class__.__name__,
                                                                              item))