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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 set_pixel_size(self, deltaPix):
 """ update pixel size :param deltaPix: :return: """

        self._pixel_size = deltaPix
        if self.psf_type == 'GAUSSIAN':
            try:
                del self._kernel_point_source
            except:
                pass