code: def test_fwf_colspecs_none(colspecs, exp_data):
      # see gh-7079
      data = """\
  123456
  456789
  """
      expected = DataFrame(exp_data)
  
      result = read_fwf(StringIO(data), colspecs=colspecs, header=None)
      tm.assert_frame_equal(result, expected)
  
imports: from datetime import datetime
  from io import BytesIO, StringIO
  from pathlib import Path
  import numpy
  import pytest
  from pandas.errors import EmptyDataError
  import pandas
  from pandas import DataFrame, DatetimeIndex
  import pandas._testing
  from pandas.core.arrays import ArrowStringArray, StringArray
  from pandas.io.common import urlopen
  from pandas.io.parsers import read_csv, read_fwf
label_desc: Use image node_id 11 for calling a global function with example usage: test_fwf_colspecs_none(colspecs, exp_data) without return types