skbio.tree.TreeNode.find#

TreeNode.find(name)[source]#

Find a node by name.

Parameters:

nameTreeNode or str: The name of the node to find. If a TreeNode object is provided, then it is simply returned.

Returns:

TreeNode: The found node.

Raises:

MissingNodeError: Raises if the node to be searched for is not found.

See also

find_all
find_by_id
find_by_func

Notes

The first call to find will cache all nodes in the tree on the assumption that additional calls to find will be made.

find will first attempt to find the node in the tips. If it cannot find a corresponding tip, then it will search through the internal nodes of the tree. In practice, phylogenetic trees and other common trees in biology do not have unique internal node names. As a result, this find method will only return the first occurrence of an internal node encountered on a postorder traversal of the tree.

Examples

>>> from skbio import TreeNode
>>> tree = TreeNode.read(["((a,b)c,(d,e)f);"])
>>> print(tree.find('c').name)
c