code: def test_period_add_timestamp_raises(self):
      # GH#17983
      ts = Timestamp("2017")
      per = Period("2017", freq="M")
  
      msg = r"unsupported operand type\(s\) for \+: 'Timestamp' and 'Period'"
      with pytest.raises(TypeError, match=msg):
          ts + per
  
      msg = r"unsupported operand type\(s\) for \+: 'Period' and 'Timestamp'"
      with pytest.raises(TypeError, match=msg):
          per + ts
  
imports: from datetime import timedelta
  import numpy
  import pytest
  from pandas._libs.tslibs.period import IncompatibleFrequency
  from pandas import NaT, Period, Timedelta, Timestamp, offsets
label_desc: Use image node_id 13 for calling the TestPeriodArithmetic obj's underlying member method code with example usage: obj.test_period_add_timestamp_raises() without return types