在运行NBA.py时出现错误

在运行Python设计:利用爬虫获取NBA比赛数据并进行机器学习预测NBA比赛结果出现命名错误

# 10折交叉验证
print(cross_val_score(model, X, y, cv=10, scoring='accuracy', n_jobs=-1).mean())

C:\Users\HP\AppData\Local\Programs\Python\Python37\python.exe F:/课题项目/NBA.py
Traceback (most recent call last):
File "F:/项目/NBA.py", line 127, in
print(cross_val_score(model, X, y, cv=10, scoring='accuracy', n_jobs=-1).mean())
NameError: name 'model' is not defined

去除错误