code: def __getitem__(self, item):
      if dict.__contains__(self, item):
          return dict.__getitem__(self, item)
      elif item in self.fallback:
          if item in self.fixed:
              return self.fixed[item]
          else:
              return self.fallback[item]
      raise KeyError(item)
  
imports: import copy
  import sacred.optional
  from sacred.utils import join_paths, SacredError
label_desc: Use image node_id 6 for calling the DogmaticDict obj's underlying member method code with example usage: obj.__getitem__(item) and returns: dict, self, self