code: def clean_diff_line_for_python_bug_2142(diff_line):
      if diff_line.endswith("\n"):
          return diff_line
      else:
          return diff_line + "\n\\ No newline at end of file\n"
  
imports: from __future__ import absolute_import, print_function, division
  import difflib
  import operator
  import os
  import string
  from subprocess import Popen, PIPE
  import sys
  import tabnanny
  import tokenize
  import reindent
  from six import StringIO
label_desc: Use image node_id 2 for calling a global function with example usage: clean_diff_line_for_python_bug_2142(diff_line) and returns: diff_line, unknown