class_docstr: Represents a mouse event that occurred on a SceneCanvas. This event is
  delivered to all entities whose mouse interaction area is under the event.
docstr: The button pressed or released on this event.
docstr_tok: ["The","button","pressed","or","released","on","this","event","."]
code: def button(self):
      """The button pressed or released on this event."""
      return self.mouse_event.button
  
file_path: vispy/vispy/scene/events.py
imports: from __future__ import division
  from ..util.event import Event
label_desc: Use image node_id 7 for calling the SceneMouseEvent obj's underlying member method code with example usage: obj.button() and returns: self