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#!/usr/bin/env python
"""Get TAI-UTC difference in seconds for a given time using tzdata.

i.e., find the number of seconds that must be added to UTC to compute
TAI for any timestamp at or after the given time[1].

  >>> from datetime import datetime
  >>> import leapseconds
  >>> leapseconds.dTAI_UTC_from_utc(datetime(2005, 1, 1))
  datetime.timedelta(seconds=32)