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graph_drawing
Commit c4fd4af7 authored by Sander Mathijs van Veen's avatar Sander Mathijs van Veen
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Removed parent attribute to avoid cyclic references between nodes.

parent 003a9e25
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node.py
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...@@ -4,10 +4,6 @@ ...@@ -4,10 +4,6 @@
class Node(object): class Node(object):
def __init__(self, value, *nodes): def __init__(self, value, *nodes):
self.value, self.nodes = value, list(nodes) self.value, self.nodes = value, list(nodes)
self.parent = None
for a in self.nodes:
a.parent = self
def __getitem__(self, n): def __getitem__(self, n):
return self.nodes[n] return self.nodes[n]
...@@ -38,7 +34,6 @@ class Node(object): ...@@ -38,7 +34,6 @@ class Node(object):
class Leaf(Node): class Leaf(Node):
def __init__(self, value): def __init__(self, value):
self.value = value self.value = value
self.parent = None
self.nodes = None self.nodes = None
def __len__(self): def __len__(self):
......
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