【ValueError: Target is multiclass but average=‘binary‘. Please choose another average setting, one 】

完整报错为：ValueError: Target is multiclass but average='binary'. Please choose another average setting, one of [None, 'micro', 'macro', 'weighted'].

解决方法
对于多分类任务，将

from sklearn.metrics import f1_score
f1_score(y_test, y_pred)

改为：

f1_score(y_test, y_pred,average='macro') # average按任务需要计算