code: def main():
      
      now = datetime.datetime.now
      try:
          while True:
              sys.stdout.write(str(now()) + ' ')
              time.sleep(1)
      except KeyboardInterrupt:
          pass
      except IOError as exc:
          if exc.errno != errno.EPIPE:
              raise
docs: Slowly writes to stdout, without emitting a newline so any output
      buffering (or input for next pipeline command) can be detected.