new_contents: import icy
  import contextlib
  import os
  from datetime import datetime
  
  class DummyFile(object):
      def write(self): pass
  
  if __name__ == '__main__':
      print('running examples tests ...')
      t0 = datetime.now()
      results = [0, 0, 0, 0]
      for ex in sorted(icy.examples):
          t1 = datetime.now()
          try:
              with contextlib.redirect_stdout(DummyFile):
                  data = icy.read(icy.examples[ex])
              n_keys = len(data.keys())
              if n_keys > 0:
                  print('data {:<15} [SUCCESS]   {:.1f}s, {} dfs, {}'.format(
                      ex, (datetime.now()-t1).total_seconds(), n_keys, icy.mem(data)))
                  results[0] += 1
              else:
                  print('data {:<15} [NO IMPORT] {:.1f}s'.format(ex, (datetime.now()-t1).total_seconds()))
                  results[1] += 1
          except:
              print('data {:<15} [EXCEPTION] {:.1f}s'.format(ex, (datetime.now()-t1).total_seconds()))
              results[2] += 1
      print()
      print('ran {} tests in {:.1f} seconds'.format(len(icy.examples),
          (datetime.now()-t0).total_seconds()))
      print('{} success / {} no import / {} exception'.format(
          str(results[0]), str(results[1]), str(results[2])))
          
subject: test read() on all examples