索引器错误：元组索引超出范围（XGBoost）

Question

我试图预测一些商店的每周销售额。我想使用XGBoost，但我一直遇到以下错误：

IndexError: tuple index out of range

我的代码：

from sklearn.model_selection import train_test_split

features = ["Store",'Dept','Temperature','Fuel_Price','CPI','Unemployment']

y = allmergecopy.Weekly_Sales
X = allmergecopy[features]
X_train, y_train, X_valid, y_valid = train_test_split(y,X,test_size=.2, train_size=.8)

from xgboost import XGBRegressor

my_model = XGBRegressor(n_estimators=100)
my_model.fit(X_train, y_train)

供参考：

y_train.shape = (84314,), X_train.shape = (337256,)

Answer 1

而不是：

X_train, y_train, X_valid, y_valid = train_test_split(y,X,test_size=.2, train_size=.8)

写：

x_train,x_valid,y_train,y_valid= train_test_split(x,y,test_size=0.2)

然后使用：

from xgboost import XGBRegressor
my_model = XGBRegressor(n_estimators=100)
my_model.fit(x_train, y_train)

Answer 2

使用X作为：

X=allmergecopy.drop("Weekly_Sales",axis=1)