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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 tt(self, year=None, month=1, day=1, hour=0, minute=0, second=0.0, jd=None):
 """Build a `Time` from a TT calendar date. Supply the Terrestrial Time (TT) as a proleptic Gregorian calendar date: 2456675.56640625 (2014, 1, 18, 1, 35, 37.5) """

        if jd is not None:
            tt = jd
        else:
            tt = julian_date(
                _to_array(year), _to_array(month), _to_array(day),
                _to_array(hour), _to_array(minute), _to_array(second),
            )
        tt = _to_array(tt)
        return Time(self, tt)