title: wrong data type in packet layer (scapy)
body: <p>I want to reconstruct a packet with scapy. If I compare the original packet with my constructed packet, I see that a few entries in a layer of my packet have the wrong values. I think it comes from unsuitable datatypes of some values like the following one:</p>
  
  <p>If I print <em>stream_id</em> in one string like this  </p>
  
  <pre><code>stream_id = "\x00\x22\x97\x04\x06\xba\x00\x00"
  </code></pre>
  
  <p>the output is unreadable (like wingding symbols).</p>
  
  <p>But if I put <em>stream_id</em> together myself like this</p>
  
  <pre><code>alias = "CB"
  stream_id = '\\x' + alias + '\\x' + alias + '\\x' + alias + '\\x' + alias
  </code></pre>
  
  <p>the printing output is <strong>\x9B\x9B\x9B\x9B</strong>.</p>
  
  <p>What's the difference between those two notations?</p>
  
  <p>Please help</p>