title: Python regexp for data of byte numbers
body: <p>How to make a regexp matching for a row of bytes?<br>
  For example how to check with regexp that binary data consists of (0-10 byte) characters?  </p>
  
  <p><code>data = 0x00 0x05 0x02 0x00 0x03</code> ...  (not a string, binary data)</p>