title: 'int' object has no attribute 'ljust'
body: <pre><code>import RPi.GPIO as GPIO
  import SimpleMFRC522
  
  reader = SimpleMFRC522.SimpleMFRC522()
  
  try:
          text = int(raw_input('New data:'))
          print("Now place your tag to write")
  
          reader.write(text)
          print("Written")
  finally:
          GPIO.cleanup()
  </code></pre>
  
  <p>After running I have this error:
  AttributeError: 'int' object has no attribute 'ljust'</p>