我在尝试在 Turi Create 中实现最近邻分类器，但我不确定我遇到的这个错误。这个错误在我创建实际模型时发生。我使用的是 Python 3.6，如果这有帮助的话。

错误：

Traceback (most recent call last):  File "/Users/PycharmProjects/turi/turi.py", line 51, in <module>    iris_cross()  File "/Users/PycharmProjects/turi/turi.py", line 37, in iris_cross    clf = tc.nearest_neighbor_classifier(train_data, target='4', features=features)TypeError: 'module' object is not callable

代码：

import turicreate as tcimport pandas as pdfrom sklearn.model_selection import train_test_splitfrom sklearn.preprocessing import StandardScalerfrom sklearn import datasetsimport timeimport numpy as np#Iris Classification Cross Validationdef iris_cross():    iris = datasets.load_iris()    features = ['0','1','2','3']    target = iris.target_names    x = iris.data    y = iris.target.astype(int)    undata = np.column_stack((x,y))    data = tc.SFrame(pd.DataFrame(undata))    print(data)    train_data, test_data = data.random_split(.8)    clf = tc.nearest_neighbor_classifier(train_data, target='4', features=features)    print('done')iris_cross()

回答：

你需要实际调用 nearest_neighbor_classifier 的 create() 方法。请查看库 API。

请改为运行以下代码行：

clf = tc.nearest_neighbor_classifier.create(train_data, target='4', features=features)