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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 f_energy(ac_power, times):
 """ Calculate the total energy accumulated from AC power at the end of each timestep between the given times. :param ac_power: AC Power [W] :param times: times :type times: np.datetime64[s] :return: energy [W*h] and energy times """

    dt = np.diff(times)  # calculate timesteps
    # convert timedeltas to quantities
    dt = dt.astype('timedelta64[s]').astype('float') / sc_const.hour
    # energy accumulate during timestep
    energy = dt * (ac_power[:-1] + ac_power[1:]) / 2
    return energy, times[1:]