code: def test_non_int_header(all_parsers, header):
      # see gh-16338
      msg = "header must be integer or list of integers"
      data = """1,2\n3,4"""
      parser = all_parsers
  
      with pytest.raises(ValueError, match=msg):
          parser.read_csv(StringIO(data), header=header)
  
imports: from collections import namedtuple
  from io import StringIO
  import numpy
  import pytest
  from pandas.errors import ParserError
  from pandas import DataFrame, Index, MultiIndex
  import pandas._testing
label_desc: Use image node_id 19 for calling a global function with example usage: test_non_int_header(all_parsers, header) without return types