显示Logistic回归结果时出错

Question

当我尝试在Jupyter笔记本中运行逻辑回归时，出现以下错误：

model=LogisticRegression()
scoring='accuracy'
results = cross_val_score(model, X, Y, cv=kfold, scoring=scoring)
print("Accuracy: %.3f (%.3f)") % (results.mean(), results.std())

TypeError: unsupported operand type(s) for %: 'NoneType' and 'tuple'

Answer 1

我相信你只是错过了最外层的包裹parens。试试这个。

print(("Accuracy: %.3f (%.3f)") % (results.mean(), results.std()))