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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_human_timedelta(s: str):
 """ Returns ``datetime.datetime`` from natural language time deltas True """

    cal = parsedatetime.Calendar()
    dttm = dttm_from_timtuple(datetime.now().timetuple())
    d = cal.parse(s or '', dttm)[0]
    d = datetime(d.tm_year, d.tm_mon, d.tm_mday, d.tm_hour, d.tm_min, d.tm_sec)
    return d - dttm