TreeNode¶

class visualife.diagrams.TreeNode(id, value)¶

Bases: object

Creates a tree node. Leaves should be appended later :param id: (string) a string that is used to identify graphical elements of this tree. ID of a node will be created as ID-idx where ID is the ID of a layout object and idx is the index of this node :param value: value stored at this node

Attributes Summary

`children`	Returns a reference of the list of children nodes
`children_deepcopy`	Returns a deep copy of the list of children nodes without None elements
`id`
`parent`

Methods Summary

`append`(n)	Appends a children node i.e.
`collect_leaves`(root_node[, leaves])	Collects all leaves of a given tree from the left to the right :param root_node: (`TreeNode`) - the root of a tree :param leaves: (`list`) - a list where the leaves will be appended :return: the list of leaves
`count_nodes`()	Count all the nodes of a given tree :param root_node: (`TreeNode`) - the root of a tree :return: the number of nodes
`is_leaf`()
`nodes`([if_update])	Returns a list of all nodes of this tree :param if_update: (`boolean`) - if True, the list will be collected from scratch, otherwise a cached copy is returned :return: a list of all nodes of this tree
`values`()

Attributes Documentation

children¶: Returns a reference of the list of children nodes

children_deepcopy¶: Returns a deep copy of the list of children nodes without None elements

id¶

parent¶

Methods Documentation

append(n)¶: Appends a children node i.e. a leaf to this tree

static collect_leaves(root_node, leaves=[])¶: Collects all leaves of a given tree from the left to the right :param root_node: (TreeNode) - the root of a tree :param leaves: (list) - a list where the leaves will be appended :return: the list of leaves

count_nodes()¶: Count all the nodes of a given tree :param root_node: (TreeNode) - the root of a tree :return: the number of nodes

is_leaf()¶

nodes(if_update=False)¶

Returns a list of all nodes of this tree :param if_update: (boolean) - if True, the list will be collected from scratch,

otherwise a cached copy is returned

Returns:	a list of all nodes of this tree

values()¶