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A graph represented using ConnectedBox and Connection objects.
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Methods
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__init__
__str__
add_edge
add_node
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__init__
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__init__ ( self )
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__str__
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__str__ ( self )
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add_edge
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add_edge ( self, edge )
Add an edge to the graph.
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Exceptions
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ValueError( 'Duplicate edge: %s' % edge )
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add_node
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add_node ( self, node )
Add a node to the graph.
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Exceptions
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ValueError( 'Duplicate value: %s' % node )
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