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TreeSwift is a Python package for efficiently traversing and manipulating ultra-large phylogenetic trees. It should support all versions of Python 3.

Installation

TreeSwift can be installed using pip:

sudo pip install treeswift

If you are using a machine on which you lack administrative powers, TreeSwift can be installed locally using pip:

pip install --user treeswift

Usage

Typical usage should be as follows:

1. Import the treeswift package
2. Use treeswift.read_tree_newick to load your Newick tree
3. Use the various Tree class functions on the resulting object as you need

import treeswift
tree = treeswift.read_tree_newick(my_newick_string)
for node in tree.traverse_postorder():
    print(node)

For more examples, take a look at the Cookbook. Full documentation can be found at: https://niema.net/TreeSwift