ytree.data_structures.tree_node.TreeNode.get_leaf_nodes

TreeNode.get_leaf_nodes(selector=None)[source]

Get all leaf nodes from the tree of which this is the head.

This returns a generator of all leaf nodes belonging to this tree. A leaf node is a node that has no ancestors.

Parameters:: selector (optional, str ("forest", "tree", or "prog")) – The tree selector from which leaf nodes will be found. If none given, this will be set to “forest” if the calling node is a root node and “tree” otherwise.
Returns:: leaf_nodes – TreeNode objects.
Return type:: a generator of

Examples

>>> import ytree
>>> a = ytree.load("tiny_ctrees/locations.dat")
>>> my_tree = a[0]
>>> for leaf in my_tree.get_leaf_nodes():
...     print (leaf["mass"])