title: spidev / Python error
body: <pre><code>import spidev
  spi = spidev.SpiDev()
  spi.open(0, 1)
  l = ['0x20','0x01','0x00','0x10','0x3D','0x04','0x00','0x05','0x00','0x01','0x00','0x00','0x00','0x00','0x00','0x00','0x00','0x00','0x00','0x00'] 
  resp = spi.xfer2(l)
  </code></pre>
  
  <p>results in:</p>
  
  <blockquote>
    <p>TypeError: Non-Int/Long value in arguments: b592da58.</p>
  </blockquote>