<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _round_robin_write(writers, generator):
 """Write records from generator round-robin across writers."""

  for i, example in enumerate(utils.tqdm(
      generator, unit=" examples", leave=False)):
    writers[i % len(writers)].write(example)