Dot Exporter¶
For any details about the dot language, see graphviz

class
anytree.exporter.dotexporter.
DotExporter
(node, graph='digraph', name='tree', options=None, indent=4, nodenamefunc=None, nodeattrfunc=None, edgeattrfunc=None, edgetypefunc=None)[source]¶ Bases:
object
Dot Language Exporter.
Parameters: node (Node) – start node.
Keyword Arguments:  graph – DOT graph type.
 name – DOT graph name.
 options – list of options added to the graph.
 indent (int) – number of spaces for indent.
 nodenamefunc – Function to extract node name from node object. The function shall accept one node object as argument and return the name of it.
 nodeattrfunc – Function to decorate a node with attributes. The function shall accept one node object as argument and return the attributes.
 edgeattrfunc – Function to decorate a edge with attributes. The function shall accept two node objects as argument. The first the node and the second the child and return the attributes.
 edgetypefunc – Function to which gives the edge type. The function shall accept two node objects as argument. The first the node and the second the child and return the edge (i.e. ‘>’).
>>> from anytree import Node >>> root = Node("root") >>> s0 = Node("sub0", parent=root, edge=2) >>> s0b = Node("sub0B", parent=s0, foo=4, edge=109) >>> s0a = Node("sub0A", parent=s0, edge="") >>> s1 = Node("sub1", parent=root, edge="") >>> s1a = Node("sub1A", parent=s1, edge=7) >>> s1b = Node("sub1B", parent=s1, edge=8) >>> s1c = Node("sub1C", parent=s1, edge=22) >>> s1ca = Node("sub1Ca", parent=s1c, edge=42)
A directed graph:
>>> from anytree.exporter import DotExporter >>> for line in DotExporter(root): ... print(line) digraph tree { "root"; "sub0"; "sub0B"; "sub0A"; "sub1"; "sub1A"; "sub1B"; "sub1C"; "sub1Ca"; "root" > "sub0"; "root" > "sub1"; "sub0" > "sub0B"; "sub0" > "sub0A"; "sub1" > "sub1A"; "sub1" > "sub1B"; "sub1" > "sub1C"; "sub1C" > "sub1Ca"; }
An undirected graph:
>>> def nodenamefunc(node): ... return '%s:%s' % (node.name, node.depth) >>> def edgeattrfunc(node, child): ... return 'label="%s:%s"' % (node.name, child.name) >>> def edgetypefunc(node, child): ... return '' >>> from anytree.exporter import DotExporter >>> for line in DotExporter(root, graph="graph", ... nodenamefunc=nodenamefunc, ... nodeattrfunc=lambda node: "shape=box", ... edgeattrfunc=edgeattrfunc, ... edgetypefunc=edgetypefunc): ... print(line) graph tree { "root:0" [shape=box]; "sub0:1" [shape=box]; "sub0B:2" [shape=box]; "sub0A:2" [shape=box]; "sub1:1" [shape=box]; "sub1A:2" [shape=box]; "sub1B:2" [shape=box]; "sub1C:2" [shape=box]; "sub1Ca:3" [shape=box]; "root:0"  "sub0:1" [label="root:sub0"]; "root:0"  "sub1:1" [label="root:sub1"]; "sub0:1"  "sub0B:2" [label="sub0:sub0B"]; "sub0:1"  "sub0A:2" [label="sub0:sub0A"]; "sub1:1"  "sub1A:2" [label="sub1:sub1A"]; "sub1:1"  "sub1B:2" [label="sub1:sub1B"]; "sub1:1"  "sub1C:2" [label="sub1:sub1C"]; "sub1C:2"  "sub1Ca:3" [label="sub1C:sub1Ca"]; }

to_dotfile
(filename)[source]¶ Write graph to filename.
>>> from anytree import Node >>> root = Node("root") >>> s0 = Node("sub0", parent=root) >>> s0b = Node("sub0B", parent=s0) >>> s0a = Node("sub0A", parent=s0) >>> s1 = Node("sub1", parent=root) >>> s1a = Node("sub1A", parent=s1) >>> s1b = Node("sub1B", parent=s1) >>> s1c = Node("sub1C", parent=s1) >>> s1ca = Node("sub1Ca", parent=s1c)
>>> from anytree.exporter import DotExporter >>> DotExporter(root).to_dotfile("tree.dot")
The generated file should be handed over to the dot tool from the http://www.graphviz.org/ package:
$ dot tree.dot T png o tree.png