code: def test_fromtextfile_delimitor(self):
      # NumPy 1.22.0, 2021-09-23
  
      textfile = io.StringIO(
          textwrap.dedent(
              """
              A,B,C,D
              'string 1';1;1.0;'mixed column'
              'string 2';2;2.0;
              'string 3';3;3.0;123
              'string 4';4;4.0;3.14
              """
          )
      )
  
      with pytest.warns(DeprecationWarning):
          result = np.ma.mrecords.fromtextfile(textfile, delimitor=";")
  
file_path: catboost/contrib/python/numpy/py3/numpy/ma/tests/test_deprecations.py
imports: import pytest
  import numpy
  from numpy.testing import assert_warns
  from numpy.ma.testutils import assert_equal
  from numpy.ma.core import MaskedArrayFutureWarning
  import io
  import textwrap
label_desc: Use image node_id 1 for calling the TestFromtextfile obj's underlying member method code with example usage: obj.test_fromtextfile_delimitor() without return types