TypeError：“模块”对象不可调用，cross_validation Python3

Question

TypeError：“模块”对象不可调用

尝试使用cross_validation ，出现上述错误。 我不太确定如何解决这个问题。 由于我对此很陌生，因此，我将非常感谢您的帮助。

import pandas as pd
import quandl, math
import numpy as np
from sklearn import preprocessing, svm, cross_validation
from sklearn.linear_model import LinearRegression

df = quandl.get('WIKI/GOOGL')
df = df [['Adj. Open','Adj. High','Adj. Low','Adj. Close','Adj. Volume',]]
df['HL_PCT'] = (df['Adj. High'] - df['Adj. Open']) / df['Adj. Open'] *  100
df['PCT_change'] = (df['Adj. Close'] - df['Adj. Open']) / df['Adj. Open'] *  100

df = df[['Adj. Close','HL_PCT','PCT_change','Adj. Volume']]

forecast_col = 'Adj. Close'
df.fillna(-99999, inplace=True)

forecast_out = int(math.ceil(0.01*len(df)))

df['label'] = df[forecast_col].shift(-forecast_out)
df.dropna(inplace=True)

x = np.array(df.drop(['label'],1))
y = np.array(df['label'])
x = preprocessing.scale(x)
y = np.array(df['label'])

x_train, x_test, y_train, y_test = cross_validation(x, y, test_size=0.2)

clf = LinearRegression
clf.fit(x_train, y_train)

accuracy = clf.score(x_test, y_test)

print(accuracy)

Answer 1

名称cross_validation标识一个模块，该函数的名称为train_test_split （请参见sklearn文档 ）。

使用点符号来代替调用函数：

cross_validation.train_test_split(x, y, test_size=0.2)