code: def test_slice_consolidate_invalidate_item_cache(
      self, using_copy_on_write
  ):
      # this is chained assignment, but will 'work'
      with option_context("chained_assignment", None):
          # #3970
          df = DataFrame({"aa": np.arange(5), "bb": [2.2] * 5})
  
          # Creates a second float block
          df["cc"] = 0.0
  
          # caches a reference to the 'bb' series
          df["bb"]
  
          # Assignment to wrong series
          with tm.raises_chained_assignment_error():
              df["bb"].iloc[0] = 0.17
          df._clear_item_cache()
          if not using_copy_on_write:
              tm.assert_almost_equal(df["bb"][0], 0.17)
          else:
              # with ArrayManager, parent is not mutated with chained assignment
              tm.assert_almost_equal(df["bb"][0], 2.2)
  
imports: from string import ascii_letters
  import numpy
  import pytest
  from pandas.errors import SettingWithCopyError, SettingWithCopyWarning
  import pandas
  from pandas import DataFrame, Index, Series, Timestamp, date_range, option_context
  import pandas._testing
label_desc: Use image node_id 1 for calling the TestCaching obj's underlying member method code with example usage: obj.test_slice_consolidate_invalidate_item_cache(using_copy_on_write) without return types