code: def test_encoding_non_utf8_multichar_sep(
      python_parser_only, sep, encoding
  ):
      # see gh-3404
      expected = DataFrame({"a": [1], "b": [2]})
      parser = python_parser_only
  
      data = "1" + sep + "2"
      encoded_data = data.encode(encoding)
  
      result = parser.read_csv(
          BytesIO(encoded_data),
          sep=sep,
          names=["a", "b"],
          encoding=encoding,
      )
      tm.assert_frame_equal(result, expected)
  
imports: from __future__ import annotations
  import csv
  from io import BytesIO, StringIO, TextIOWrapper
  from typing import TYPE_CHECKING
  import numpy
  import pytest
  from pandas.errors import ParserError, ParserWarning
  from pandas import DataFrame, Index, MultiIndex
  import pandas._testing
label_desc: Use image node_id 13 for calling a global function with example usage: test_encoding_non_utf8_multichar_sep(python_parser_only, sep, encoding) without return types