code: def safe_slice(history, keys):
      # catch errors
      for key in keys:
          try:
              history[key]
          except (KeyError, IndexError):
              pass
  
file_path: skorch/examples/benchmarks/history.py
imports: from pprint import pprint
  import time
  import numpy
  from sklearn.datasets import make_classification
  import torch
  from skorch import NeuralNetClassifier
  from skorch.callbacks import Callback
  from skorch.toy import make_classifier
label_desc: Use image node_id 2 for calling a global function with example usage: safe_slice(history, keys) without return types