code: def get_diaginfo(diaginfo_file):
      
  
      widths = [rec.width for rec in diag_recs]
      col_names = [rec.name for rec in diag_recs]
      dtypes = [rec.type for rec in diag_recs]
      usecols = [name for name in col_names if not name.startswith('-')]
  
      diag_df = pd.read_fwf(diaginfo_file, widths=widths, names=col_names,
                            dtypes=dtypes, comment="#", header=None,
                            usecols=usecols)
      diag_desc = {diag.name: diag.desc for diag in diag_recs
                   if not diag.name.startswith('-')}
  
      return diag_df, diag_desc
docs: Read an output's diaginfo.dat file and parse into a DataFrame for
      use in selecting and parsing categories.
  
      Parameters
      ----------
      diaginfo_file : str
          Path to diaginfo.dat
  
      Returns
      -------
      DataFrame containing the category information.