今天晚上解决了一个错误,如下:

aaarticlea/png;base64,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" alt="" />

解决方法:

一、

安装graphviz-2.38

1.添加系统环境变量

.建立变量名GRAPHVIZ_DOT

值为安装的路径C:\Program Files (x86)\Graphviz2.34\bin\dot.exe

2. 设置环境变量 在用户环境变量添加以下一个变量

.建立变量名 GRAPHVIZ_INSTALL_DIR, 值为如C:\Program Files (x86)\Graphviz2.34

3 在系统环境变量 建立变量名PATH中添加Graphviz的bin目录路径,如C:\Program Files (x86)\Graphviz2.34\bin

二、

安装 graphviz-0.6

Python setup.py install

三、

>>> from graphviz import Digraph
>>> dot = Digraph(comment='The Round Table')
>>> dot.node('A', 'King Arthur')
>>> print(dot.source)
// The Round Table
digraph {
A [label="King Arthur"]
}
>>> dot.render('test-output/round-table.gv', view=True)
'test-output/round-table.gv.pdf'

  

结果:

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