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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 _frame_advance(self, action):
 """ Advance a frame in the emulator with an action. Args: action (byte):
 the action to press on the joy-pad Returns: None """

        # set the action on the controller
        self.controllers[0][:] = action
        # perform a step on the emulator
        _LIB.Step(self._env)