code: def test_tzstr_internal_timedeltas():
      with pytest.warns(tz.DeprecatedTzFormatWarning):
          tz1 = tz.tzstr("EST5EDT,5,4,0,7200,11,-3,0,7200")
  
      with pytest.warns(tz.DeprecatedTzFormatWarning):
          tz2 = tz.tzstr("EST5EDT,4,1,0,7200,10,-1,0,7200")
  
      assert tz1._start_delta != tz2._start_delta
      assert tz1._end_delta != tz2._end_delta
  
imports: import sys
  import pytest
  from dateutil.parser._parser import _ymd
  from dateutil import tz
label_desc: Use image node_id 4 for calling a global function with example usage: test_tzstr_internal_timedeltas() without return types