code: def init_gtk_clipboard():
      import gtk
  
      def copy_gtk(text):
          global cb
          cb = gtk.Clipboard()
          cb.set_text(text)
          cb.store()
  
      def paste_gtk():
          clipboardContents = gtk.Clipboard().wait_for_text()
          # for python 2, returns None if the clipboard is blank.
          if clipboardContents is None:
              return ""
          else:
              return clipboardContents
  
      return copy_gtk, paste_gtk
  
file_path: catboost/contrib/python/pandas/py2/pandas/io/clipboard/clipboards.py
imports: import subprocess
  from pandas.compat import PY2, text_type
  from .exceptions import PyperclipException
label_desc: Use image node_id 2 for calling a global function with example usage: init_gtk_clipboard() and returns: copy_gtk,  paste_gtk, str, clipboardContents