code: def testBounded(self):
      ds1 = dataseries.SequenceDataSeries()
      ds2 = dataseries.SequenceDataSeries()
      ads1, ads2 = aligned.datetime_aligned(ds1, ds2, 1)
  
      now = datetime.datetime.now()
      ds1.appendWithDateTime(now + datetime.timedelta(seconds=1), 1)
      ds1.appendWithDateTime(now + datetime.timedelta(seconds=2), 2)
      ds1.appendWithDateTime(now + datetime.timedelta(seconds=3), 3)
      ds2.appendWithDateTime(now + datetime.timedelta(seconds=2), 2)
      ds2.appendWithDateTime(now + datetime.timedelta(seconds=3), 3)
      ds2.appendWithDateTime(now + datetime.timedelta(seconds=4), 4)
      self.assertEqual(ads1[:], [3])
      self.assertEqual(ads2[:], [3])
  
imports: import datetime
  from six.moves import xrange
  from .None import common
  from pyalgotrade import dataseries
  from pyalgotrade.dataseries import bards
  from pyalgotrade.dataseries import aligned
  from pyalgotrade import bar
label_desc: Use image node_id 9 for calling the TestDateAlignedDataSeries obj's underlying member method code with example usage: obj.testBounded() without return types