Tree¶
Represents a simple tree.
Created on 6 Mar 2014
@author: paulross
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class
cpip.util.Tree.DuplexAdjacencyList¶ Represents a set of parent/child relationships (and their inverse) as Adjacency Lists.
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allChildren¶ Returns an unordered list of objects that have at least one parent.
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allParents¶ Returns an unordered list of objects that have at least one child.
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children(parent)¶ Returns all immediate children of a given parent.
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hasChild(child)¶ Returns True if the given child has any parents.
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hasParent(parent)¶ Returns True if the given parent has any children.
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parents(child)¶ Returns all immediate parents of a given child.
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treeChildParent(theObj)¶ Returns a Tree() object where the links are the relationships between child and parent. Cycles are not reproduced i.e. if a -> b and b -> c and c-> a then treeChildParent(‘a’) returns [‘a’, ‘c’, ‘b’,] treeChildParent(‘b’) returns [‘b’, ‘a’, ‘c’,] treeChildParent(‘c’) returns [‘c’, ‘b’, ‘a’,]
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treeParentChild(theObj)¶ Returns a Tree() object where the links are the relationships between parent and child. Cycles are not reproduced i.e. if a -> b and b -> c and c-> a then treeParentChild(‘a’) returns [‘a’, ‘b’, ‘c’,] treeParentChild(‘b’) returns [‘b’, ‘c’, ‘a’,] treeParentChild(‘c’) returns [‘c’, ‘a’, ‘c’,]
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