class_docstr: A `Callback` to handle the display of progress bars
class_docstr_tok: ["A","`","Callback","`","to","handle","the","display","of","progress","bars"]
code: def after_fit(self):
      if getattr(self, "mbar", False):
          self.mbar.on_iter_end()
          delattr(self, "mbar")
      if hasattr(self, "old_logger"):
          self.learn.logger = self.old_logger
  
imports: from __future__ import annotations
  from ..basics import *
label_desc: Use image node_id 9 for calling the ProgressCallback obj's underlying member method code with example usage: obj.after_fit() without return types