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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def __render_videoframe(self):
 		""" Retrieves a new videoframe from the stream. 		Sets the frame as the __current_video_frame and passes it on to 		__videorenderfunc() if it is set. """


		new_videoframe = self.clip.get_frame(self.clock.time)
		# Pass it to the callback function if this is set
		if callable(self.__videorenderfunc):
			self.__videorenderfunc(new_videoframe)
		# Set current_frame to current frame (...)
		self.__current_videoframe = new_videoframe