class_docstr: Upload file(s) from browser to Python kernel as bytes
class_docstr_tok: ["Upload","file","(","s",")","from","browser","to","Python","kernel","as","bytes"]
code: def _default_description(self):
      return "Upload"
  
file_path: catboost/contrib/python/ipywidgets/py2/ipywidgets/widgets/widget_upload.py
imports: from traitlets import observe, default, Unicode, Dict, List, Int, Bool, Bytes, CaselessStrEnum
  from .widget_description import DescriptionWidget
  from .valuewidget import ValueWidget
  from .widget_core import CoreWidget
  from .widget_button import ButtonStyle
  from .widget import register, widget_serialization
  from .trait_types import bytes_serialization, InstanceDict
label_desc: Use image node_id 2 for calling the FileUpload obj's underlying member method code with example usage: obj._default_description() and returns: str