OpenCV: can't predict the confidence

Predict function is not sending the result of confidence/distance

Remove the CV_WRAP from predict function on file
/opencv_contrib/modules/face/include/opencv2/face.hpp

and Recompile the opencv

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A better way that was already present in the opencv3, suggested by Abdul Jalil

result = cv2.face.MinDistancePredictCollector()
        recognizer.predict(face,result, 0)
        recog = result.getLabel()
        conf = result.getDist()