dal.py 文件源码

def __getitem__(self, k):
        key=str(k)
        _extra = self.__dict__.get('_extra', None)
        if _extra is not None:
            v = _extra.get(key, None)
            if v:
                return v
        m = REGEX_TABLE_DOT_FIELD.match(key)
        if m:
            try:
                return ogetattr(self, m.group(1))[m.group(2)]
            except (KeyError,AttributeError,TypeError):
                key = m.group(2)
        return ogetattr(self, key)