config.py 文件源码

def _ordered_dump(self, data, stream=None, Dumper=yaml.SafeDumper, **kwds):
        class OrderedDumper(Dumper):
            pass

        def _dict_representer(dumper, data):
            return dumper.represent_mapping(
                yaml.resolver.BaseResolver.DEFAULT_MAPPING_TAG,
                data.items())
        OrderedDumper.add_representer(OrderedDict, _dict_representer)
        return yaml.dump(data,
                         stream,
                         OrderedDumper,
                         default_flow_style=False,
                         indent=4,
                         **kwds)