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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 _planck_deriv(self, lam, Teff):
 """ Computes the derivative of the monochromatic blackbody intensity using the Planck function. @lam: wavelength in m @Teff: effective temperature in K Returns: the derivative of monochromatic blackbody intensity """


        expterm = np.exp(self.h*self.c/lam/self.k/Teff)
        return 2*self.h*self.c*self.c/self.k/Teff/lam**7 * (expterm-1)**-2 * (self.h*self.c*expterm-5*lam*self.k*Teff*(expterm-1))