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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 get_beamarea_pix(self, ra, dec):
 """ Calculate the area of the beam in square pixels. Parameters ra, dec : float The sky position (degrees). Returns ------- area : float The area of the beam in square pixels. """

        beam = self.get_pixbeam(ra, dec)
        if beam is None:
            return 0
        return beam.a * beam.b * np.pi