code: def load_dataset(dataset_name):
      """
      Fetch a dataset, returning an array of tuples.
      """
      url = METADATA[dataset_name]["url"]
      column_types = METADATA[dataset_name]["types"]
      f = urlopen(url)
      data = _read_rows(f, column_types)
      f.close()
      return data
  
imports: import csv
  import codecs
  from six.moves.urllib.request import urlopen
label_desc: Use image node_id 4 for calling a global function with example usage: load_dataset(dataset_name) and returns: data