python - 如何修复类型 "object of type ' CategoricalDtype' has no len()"的错误？

Question

在训练数据中:x 的数据类型是“int64”，y 是“categorical”我无法在该算法中拟合训练数据集..

我在“model.fit(x_train,y_train)”行中遇到错误

错误是“‘CategoricalDtype’类型的对象没有 len()”

    x=df.drop("income",axis=1)
    y=df["income"]
    from sklearn.model_selection import train_test_split         
    x_train,x_test,y_train,y_test=train_test_split(x,y,train_size=0.3,random_state=100)
    from sklearn.tree import DecisionTreeClassifier
    model=DecisionTreeClassifier(max_depth=4)
    model.fit(x_train,y_train)

Answer 1

尝试在y_train和y_test之后添加.tolist()