class_docstr: Subclass of `.TimerBase` using GTK timer events.
class_docstr_tok: ["Subclass","of","`",".TimerBase","`","using","GTK","timer","events","."]
code: def __init__(self, *args, **kwargs):
      self._timer = None
      super().__init__(*args, **kwargs)
  
imports: import logging
  import sys
  import matplotlib
  from matplotlib import _api, backend_tools, cbook
  from matplotlib._pylab_helpers import Gcf
  from matplotlib.backend_bases import _Backend, FigureCanvasBase, FigureManagerBase, NavigationToolbar2, TimerBase
  from matplotlib.backend_tools import Cursors
  import gi
  from gi.repository import Gdk, Gio, GLib, Gtk
label_desc: Use image node_id 1 to create a new TimerGTK object from inherited base classes: TimerBase with example: obj = TimerGTK()