====== Utilisation de GraphViz avec Python ======

  * [[https://bioinfo-fr.net/python-dessine-moi-un-graphe]]

==== Installation ====
<code bash>
pip install graphviz
</code>


-----
==== Utilisation de base ====


<code python>
import pygraphviz as pgv

graph = pgv.AGraph(directed=True)

graph.add_edge("A", "B", color="green", style="dashed")
graph.add_edge("B", "C", color="red")

graph.layout("dot")
graph.draw("graph.png")

graph.close()
</code>


=== Afficher le code correspondant ===

<code python>
print(graph.string())
</code>


------
==== Créer des sous-graphes ====

<code python>
graph.add_edge("A", "B", color="green", style="dashed")
graph.add_edge("B", "C", color="red")
graph.add_edge("C", "D")
graph.add_edge("E", "D")
graph.add_edge("D", "F")

graph.add_subgraph(["D", "E", "F"], name="cluster_machin") # le sous-graphe doit commencer par "cluster_" pour afficher un cadre !
</code>