code: def fullwidth(self):
      if hasattr(self, "_terminal_width"):
          return self._terminal_width
      return get_terminal_width()
  
imports: import sys, os, unicodedata
  import py
  from py.builtin import text, bytes
label_desc: Use image node_id 2 for calling the TerminalWriter obj's underlying member method code with example usage: obj.fullwidth() and returns: get_terminal_width, self