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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 setMagnitude(self, band, value):
 """Makes the magnitude of the source in the band equal to value. band is a SpectralElement. This method is marked for deletion once the .renorm method is well tested. Object returned is a CompositeSourceSpectrum. .. warning:: DO NOT USED """

        objectFlux = band.calcTotalFlux(self)
        vegaFlux = band.calcVegaFlux()
        magDiff = -2.5*math.log10(objectFlux/vegaFlux)
        factor = 10**(-0.4*(value - magDiff))
        return self * factor