title: How to see '\n' characters when outputting f.read(20)?
body: <p>If I print f.readlines(), I am able to see the '\n' characters included, 
  <code>['\n', 'Avoid touching eyes, nose and mouth\n', '\n', 'Why? .....]</code></p>
  
  <p>something like f.read(20) produces:</p>
  
  <p><code>Avoid touching eyes</code></p>
  
  <p>which converts the '\n' into actual empty line.</p>
  
  <p>How to see actual '\n' included within f.read(20)</p>
  
  <p>Thank you. </p>