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# skbio.tree.TreeNode.subsets

`TreeNode.``subsets`()

  Return all sets of names that come from self and its descendants

  State: Experimental as of 0.4.0.

  Compute all subsets of tip names over self, or, represent a tree as a set of nested sets.

  Returns: | A frozenset of frozensets of str
  Return type: | frozenset

  See also

  `subset()`, `compare_subsets()`

  Examples

      >>> from skbio import TreeNode
      >>> tree = TreeNode.read(["(((a,b)c,(d,e)f)h)root;"])
      >>> subsets = tree.subsets()
      >>> len(subsets)
      3