JSONDataSerializer.py 文件源码

def json_export(self, sourcenode, fname, **kargs):
        """ Exports current data for later import.

        The exported data is a snapshot of current state.

        Args:
            fname: File name for the exported data.

            sourcenode: Base of sub-tree for export.
                None for complete JSON document.

            **kargs:
                ffs.

        Returns:
            When successful returns 'True', else returns either 'False',
            or raises an exception.

        Raises:
            JSONDataTargetFile:
        """
        if not sourcenode:
            sourcenode = self.data
        try:
            with open(fname, 'w') as fp:
                #ret = 
                myjson.dump(sourcenode, fp)
        except Exception as e:
            raise JSONDataTargetFile("open-"+str(e),"data.dump",str(fname))
        return True