def __init__(self, cascade_fn="./cascades/haarcascade_frontalface_alt2.xml", scaleFactor=1.2, minNeighbors=5, minSize=(30,30)):
		if not os.path.exists(cascade_fn):
			raise IOError(cascade_fn % "No valid cascade found for path=%s.")
		self.cascade = cv2.CascadeClassifier(cascade_fn)
		self.scaleFactor = scaleFactor
		self.minNeighbors = minNeighbors
		self.minSize = minSize
dataset/ETHPy150Open bytefish/facerec/py/facedet/detector.py/CascadedDetector.__init__/swapped operands of `%`