决策树可视化文字乱码问题解决方法

我最开始尝试过直接进入tree.dot文件修改字体但是结果无济于事 

 然后我尝试直接把列名写入代码，成功了

#导入相关函数，可视化决策树
from sklearn.tree import export_graphviz
import graphviz
dot_data = export_graphviz(model,out_file = "tree1.dot",
                    feature_names= ['性别','出生年份','体重指数','糖尿病家族史','舒张压','口服耐糖量测试','胰岛素释放实验','肱三头肌皮褶厚度','BMI','DBP'],
                    filled=True,
                    rounded=True
                               )
graph = graphviz.Source(dot_data)
with open("tree1.dot",encoding='utf-8') as f:
    dot_graph = f.read()
graph=graphviz.Source(dot_graph.replace("helvetica","MicrosoftYaHei")) #如果提示警告可以将MicrosoftYaHei改为FangSong
graph.view()