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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 apply_taper(delta_t, taper, f_0, tau, amp, phi, l, m, inclination):
 """Return tapering window. """


    # Times of tapering do not include t=0
    taper_times = -numpy.arange(1, int(taper*tau/delta_t))[::-1] * delta_t
    Y_plus, Y_cross = spher_harms(l, m, inclination)
    taper_hp = amp * Y_plus * numpy.exp(10*taper_times/tau) * \
                     numpy.cos(two_pi*f_0*taper_times + phi)
    taper_hc = amp * Y_cross * numpy.exp(10*taper_times/tau) * \
                     numpy.sin(two_pi*f_0*taper_times + phi)

    return taper_hp, taper_hc