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I am loading an image from a file using face = cv2.imread('faces/face.jpg') Then passing face to this method

results = classify(models,face)

def classify(models, dataSet):
    results = {}
    for trueClazz in CLASSES:
        count = 0
        correct = 0
        print("Class,Predicted Class,Problem")
        predClazz, prob = predict(models, dataSet)
        print "%s,%s,%f" % (trueClazz,predClazz, prob)
        count += 1
    print('classifying')
    return results

The error is :

  File "C:\Python27\lib\site-packages\svm.py", line 71, in gen_svm_nodearray
    raise TypeError('xi should be a dictionary, list or tuple')
TypeError: xi should be a dictionary, list or tuple