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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 parse_deltat_data(fileobj):
 """Parse the United States Naval Observatory ``deltat.data`` file. Each line file gives the date and the value of Delta T:: 2016 2 1 68.1577 This function returns a 2xN array of raw Julian dates and matching Delta T values. """

    array = np.loadtxt(fileobj)
    year, month, day = array[-1,:3].astype(int)
    expiration_date = date(year + 1, month, day)
    year, month, day, delta_t = array.T
    data = np.array((julian_date(year, month, day), delta_t))
    return expiration_date, data