class_docstr: Callback that records events into a `History` object.
  
  This callback is automatically applied to
  every SuperModule.
class_docstr_tok: ["Callback","that","records","events","into","a","`","History","`","object",".","This","callback","is","automatically","applied","to","every","SuperModule","."]
code: def __repr__(self):
      return str(self.epoch_metrics)
  
file_path: pywick/pywick/callbacks/History.py
imports: from .None import Callback
label_desc: Use image node_id 7 for calling the History obj's underlying member method code with example usage: obj.__repr__() and returns: str