code: def set_encoding(self, encoding):
      self._bar_ends = ("", "")
      self._bar_symbols = ">"
  
imports: from io import StringIO
  import math
  import random
  import time
  from h2o.utils.progressbar import ProgressBar, ProgressBarWidget, PBWBar, PBWPercentage, PBWString, RenderResult
label_desc: Use image node_id 1 for calling the MyPWBar obj's underlying member method code with example usage: obj.set_encoding(encoding) without return types