docstr: Returns the infile = ... line of code to make a TextIOWrapper.
docstr_tok: ["Returns","the","infile","=","...","line","of","code","to","make","a","TextIOWrapper","."]
code: def _generate_infile_setup_code(self):
      """Returns the infile = ... line of code to make a TextIOWrapper."""
      return (
          "import %s as io ;"
          'infile = io.open(sys.stdin.fileno(), encoding="utf-8", newline=None) ;'
          "assert isinstance(infile, io.TextIOWrapper)" % self.modname
      )
  
imports: import os
  import select
  import signal
  import subprocess
  import sys
  import time
  import unittest
  from test import support
  import _io
  import _pyio
label_desc: Use image node_id 1 for calling the TestTextIOSignalInterrupt obj's underlying member method code with example usage: obj._generate_infile_setup_code() and returns: unknown