code: def test_fwf_colspecs_is_list_or_tuple_of_two_element_tuples():
      data = """index,A,B,C,D
  foo,2,3,4,5
  bar,7,8,9,10
  baz,12,13,14,15
  qux,12,13,14,15
  foo2,12,13,14,15
  bar2,12,13,14,15
  """
  
      msg = "Each column specification must be.+"
  
      with pytest.raises(TypeError, match=msg):
          read_fwf(StringIO(data), colspecs=[("a", 1)])
  
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 10 for calling a global function with example usage: test_fwf_colspecs_is_list_or_tuple_of_two_element_tuples() without return types