code: def test_names_and_infer_colspecs():
      # GH#45337
      data = """X   Y   Z
        959.0    345   22.2
      """
      result = read_fwf(
          StringIO(data), skiprows=1, usecols=[0, 2], names=["a", "b"]
      )
      expected = DataFrame({"a": [959.0], "b": 22.2})
      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 40 for calling a global function with example usage: test_names_and_infer_colspecs() without return types