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graph_viz

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import graphviz as gv

# ノードのリスト
text1 = 'this is sample text \n hello'
nodes = [text1, 'B', 'C', 'D', 'E', 'F']

# Digraphオブジェクトを作成
graph = gv.Digraph(format='svg', filename="output/mygraph.gv",
                   graph_attr=dict(rankdir='LR', splines='ortho'),
                   node_attr=dict(shape='box'))

# ノードを5つずつ追加
graph.node(nodes[0])
graph.node(nodes[1])
graph.node(nodes[2])
graph.node(nodes[3])
graph.node(nodes[4])
graph.node(nodes[5])

# エッジを追加
graph.edge(text1, 'B')
graph.edge('B', 'C')
graph.edge('C', 'D')
graph.edge('D', 'E', constraint='false')
graph.edge('E', 'F')

graph.view()

from graphviz import Digraph

# Digraphオブジェクトを作成します
dot = Digraph()

# ノードを追加します
dot.node('A', 'Start', shape='box')
dot.node('B', 'Process 1', shape='box')
dot.node('C', 'Process 2', shape='box')
dot.node('D', 'End', shape='box')

# エッジを追加します
dot.edges(['AB', 'BC', 'CD'])

# 一段目の最後から二段目の最初に矢印を追加します
dot.edge('B', 'C', constraint='false')

# レイアウトを横向きに設定します
dot.attr(rankdir='LR')

# ファイルに保存して表示します
dot.render('flowchart', format='png', cleanup=True)


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