code: def dt():
      return datetime(2008, 1, 1)
  
imports: from __future__ import annotations
  from datetime import date, datetime, timedelta
  import numpy
  import pytest
  from pandas._libs.tslibs.offsets import ApplyTypeError, BDay, BMonthEnd
  from pandas import DatetimeIndex, Timedelta, _testing
  from pandas.tests.tseries.offsets.common import assert_is_on_offset, assert_offset_equal
  from pandas.tseries import offsets
label_desc: Use image node_id 1 for calling a global function with example usage: dt() and returns: datetime