#!/usr/bin/env python import pydotplus import io data = io.StringIO('digraph demo1{ a -> b -> c; c ->a; }') graph = pydotplus.graph_from_dot_data(data.getvalue()) graph.write_png('foo.png')

https://www.programming-books.io/essential/python/pydotplus-10060746034d4bf9b0eaa8cbc53c1392

or use graphviz directly: File Edit Options Buffers Tools Python Help #!/usr/bin/env python import io from graphviz import Digraph from graphviz import Graph d = Digraph(comment='The Round Table',format='png') d.node('A', 'xKing Arthur') d.node('B', 'Sir Bedevere the Wise') d.node('L', 'Sir Lancelot the Brave') d.edges(['AB', 'AL']) d.edge('B', 'L', constraint='false') #png = d.pipe() d.render('foo', view=True) 06.11.19

https://graphviz.readthedocs.io/en/stable/manual.html#engines

more complex example #!/usr/bin/env python import io from graphviz import Digraph from graphviz import Graph d = Digraph(comment='Master Foo',format='png') d.node('A', 'Foo') d.node('B', 'Enough stock1/11 80%?') d.node('C', 'Customer can wait?') d.node('D', 'Can wait') d.node('E', 'Can not wait') d.node('F', 'Take from stock1/min') d.node('G', 'Take all from stock1') d.node('H', 'Take from stock11/min') d.node('I', 'Enough to close order?') d.node('J', 'Request from production') d.node('K', 'Take from stock11/min') d.node('L', 'Take from stock11/max') #d.edges(['AB','BC','BD']) d.edge('A','B') d.edge('B','C',label='Yes') d.edge('B','D',label='No') d.edge('C','E',label='No') d.edge('C','D',label='Yes') d.edge('D','F',label=' Stock1/min?') d.edge('E','G',label=' Stock1?') d.edge('F','H',label=' Need more?') d.edge('G','I',label=' Need more?') d.edge('H','J',label=' Need more?') d.edge('I','K',label='Yes') d.edge('I','L',label='No') d.edge('L','J',label=' Need more?') #png = d.pipe() d.render('ordering', view=True) 06.11.19

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