AttributeError: 模块“sklearn”没有属性“model_selection”

Question

当我想用来sklearn.model_selection.train_test_split拆分训练集和测试集时，它会引发如下错误：

AttributeError: module 'sklearn' has no attribute 'model_selection'

我的代码如下：

import pandas as pd

import sklearn

data = pd.read_csv('SpeedVideoDataforModeling.csv',header=0,)

data_x = data.iloc[:,1:4]

data_y = data.iloc[:,4:]

x_train , x_test, y_train, y_test = 

sklearn.model_selection.train_test_split(data_x,data_y,test_size = 0.2)

在 Pycharm 中，scikit-learn 包版本为 0.19.1。 在此处输入图片描述 感谢您的帮助！

Answer 1

你需要import sklearn.model_selection在调用你的函数之前

Answer 2

您可以像from sklearn.model_selection import train_test_split. 官方文档中的一个例子:)>>> import numpy as np>>> from sklearn.model_selection import train_test_split>>> X, y = np.arange(10).reshape((5, 2)), range(5)>>> Xarray([[0, 1],       [2, 3],       [4, 5],       [6, 7],       [8, 9]])>>> list(y)[0, 1, 2, 3, 4]>>> X_train, X_test, y_train, y_test = train_test_split(...     X, y, test_size=0.33, random_state=42)...>>> X_trainarray([[4, 5],       [0, 1],       [6, 7]])>>> y_train[2, 0, 3]>>> X_testarray([[2, 3],       [8, 9]])>>> y_test[1, 4]