python – ‘LinearSVC’对象没有属性’classes_’

我在此步骤中尝试运行代码时收到错误：

model = cPickle.load(f)
is_text = model.predict(image_samples)

image_samples是我的样本,模型如下所示：

Pipeline(steps=[
    ('hog',HOGFeatures(cells_per_block=(2,2),orientations=10,pixels_per_cell=(5,5),size=(20,20))),('clf',LinearSVC(C=2.0,class_weight=None,dual=True,fit_intercept=True,intercept_scaling=1,loss='l2',max_iter=None,multi_class='ovr',penalty='l2',random_state=None,tol=0.0001,verbose=0))
])

我得到的错误信息是：

File "/home/parallels/Desktop/Python/ImageTextRecognition-master/userimageski.py",line 104,in select_text_among_candidates
is_text = model.predict(self.candidates['flattened'])

File "/usr/local/lib/python2.7/dist-packages/sklearn/utils/metaestimators.py",line 37,in <lambda>
out = lambda *args,**kwargs: self.fn(obj,*args,**kwargs)

File "/usr/local/lib/python2.7/dist-packages/sklearn/pipeline.py",line 180,in predict
return self.steps[-1][-1].predict(Xt)

File "/usr/local/lib/python2.7/dist-packages/sklearn/linear_model/base.py",line 228,in predict
return self.classes_[indices]
AttributeError: 'LinearSVC' object has no attribute 'classes_'

谁能帮助我？
非常感谢你