如何执行graphviz？

Question

我遵循了在线数据科学课程，并尝试在应用程序中可视化决策树。

我首先编写如下代码：

!pip install graphviz
!apt-get install graphviz

OUTPUT: Requirement already satisfied: graphviz in c:\users\samet girgin\python\lib\site-packages (0.10.1)

'apt-get' is not recognized as an internal or external command,
operable program or batch file.

在这之后，我编写代码以摘取树：

输入：

import graphviz
from sklearn.tree import export_graphviz

dot_data=export_graphviz(model,out_file=None, feature_names=features,filled=True, rotate=True)
graphviz.Source(dot_data)

输出：出现如下错误

ExecutableNotFound: failed to execute ['dot', '-Tsvg'], make sure the Graphviz executables are on your systems' PATH

我应该怎么办？请帮忙？