code: def test_detect_chained_assignment_false_positives(self):
      # see gh-6025: false positives
      df = DataFrame({"column1": ["a", "a", "a"], "column2": [4, 8, 9]})
      str(df)
  
      df["column1"] = df["column1"] + "b"
      str(df)
  
      df = df[df["column2"] != 8]
      str(df)
  
      df["column1"] = df["column1"] + "c"
      str(df)
  
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 14 for calling the TestChaining obj's underlying member method code with example usage: obj.test_detect_chained_assignment_false_positives() without return types