skbio.tree.TreeNode.pre_and_postorder#

TreeNode.pre_and_postorder(include_self=True)[source]#

Perform iteration over tree, visiting node before and after.

Parameters:

include_selfbool: include the initial node if True

Yields:

TreeNode: Traversed node.

See also

traverse
postorder
preorder
levelorder
tips
non_tips

Examples

>>> from skbio import TreeNode
>>> tree = TreeNode.read(["((a,b)c);"])
>>> for node in tree.pre_and_postorder():
...     print(node.name)
None
c
a
b
c
None