code: def isatty(stream):
      try:
          return stream.isatty()
      except Exception:
          return False
  
imports: import codecs
  import io
  import os
  import re
  import sys
  from weakref import WeakKeyDictionary
label_desc: Use image node_id 12 for calling a global function with example usage: isatty(stream) and returns: stream, False