graph_renderer.py 文件源码

def _render_node(self, node):
        """
        Renders a node. Recursive callee for node rendering.
        :param node: the representation of a node (dependent of rendered data structure)
        :return: node id of created node
        """
        if isinstance(node, (str, numbers.Number)) or node is None:
            node_id = uuid()
        else:
            node_id = id(node)
        node_id = str(node_id)

        if node_id not in self._rendered:
            self._rendered.add(node_id)
            if isinstance(node, dict):
                self._render_dict(node, node_id)
            elif isinstance(node, list):
                self._render_list(node, node_id)
            else:
                self._graph.node(node_id, label=self._escape_label(self._shorten_label(repr(node))))

        return node_id