notebook.community

Edit and run



In [1]:

    
import pydot



In [2]:

    
graph = pydot.Dot(graph_name='mygraph', graph_type='graph')

Graph attributes can be manipulated through the set_*() and get_*() methods.



In [3]:

    
graph.set_fontsize('12')
graph.get_fontsize()









    Out[3]:





'12'

Defaults can be set for nodes and edges.



In [4]:

    
graph.set_node_defaults(fillcolor='blue', style='filled')
graph.get_node_defaults()









    Out[4]:





[{'fillcolor': 'blue', 'style': 'filled'}]

Nodes, edges and subgraphs are added and deleted through the respective add_*() and del_*() methods.



In [5]:

    
node1 = pydot.Node(name='node1', label='My first node', shape='box')
node2 = pydot.Node(name='node2', label='My second node', color='red')
edge = pydot.Edge(src=node1, dst=node2, label='My Edge', style='dotted')

graph.add_node(node1)
graph.add_node(node2)
graph.add_edge(edge)



In [6]:

    
graph.write('pydot.dot')
graph.write_png('pydot.png')









    Out[6]:





True

graph mygraph {
fontsize=12;
node [style=filled, fillcolor=blue];
node1 [shape=box, label="My first node"];
node2 [color=red, label="My second node"];
node1 -- node2  [style=dotted, label="My Edge"];
}

Check pages 10 to 12 of the dot User's Manual for all attributes.



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